JP2007012012A - IC card access control body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an IC card access control body for securely and stably preventing interference between non-contact IC cards by sandwiching them between two non-contact IC cards.
SOLUTION: A conductive sheet 101 and a magnetic sheet 102 laminated on the front surface side and the back surface side of the conductive sheet 101 are provided. The shape of the magnetic sheet 102 is provided, and the magnetic sheet is provided on the outer peripheral edge portion of the conductive sheet 101. The shape is not laminated. The magnetic line of force that passes slightly outside the outer peripheral edge of the conductive sheet 101 is prevented from forming a magnetic path from the outer peripheral edge of the magnetic sheet 102 to the inside, and is positioned above the IC card access controller. Communication interruption performance that prevents interference without electromagnetic coupling between the non-contact IC card and the card reader is ensured. With respect to the non-contact IC card located on the lower side of the IC card access control body, the magnetic field lines are drawn from the inside and re-radiated to the outside, so that a magnetic path intersecting with the antenna coil is formed and communication performance is ensured.
[Selection] Figure 1

Description

The present invention relates to an IC card access controller for a non-contact IC card.
The IC card access control body of the non-contact IC card controls electromagnetic coupling between the non-contact IC card and the card reader.
The IC card access control body of the first non-contact IC card is a thin sheet that is sandwiched between two non-contact IC cards to separate them, and an oscillating magnetic field of a predetermined frequency radiated from the card reader. When a non-contact IC card is read by electromagnetically coupling to it, only one non-contact IC card is selectively reacted to prevent reaction with other non-contact cards. This prevents the problem of interference from reacting simultaneously.
The IC card access control body of the second non-contact IC card has one surface of the substrate as a skimming prevention surface, the other surface as an IC card use surface, and a non-contact IC card along the IC card use surface side. To prevent skimming and support for use of the non-contact IC card.
Non-contact IC cards have built-in antenna coils and IC chips, and their uses are not limited. For example, applications such as ticket gate cards for transportation, cash cards and credit cards for financial institutions, and entrance / exit management cards are assumed. it can.

In recent years, non-contact IC cards incorporating an antenna coil and an IC chip have been widely used. It has begun to be used for various purposes such as a ticket gate system for transportation, a car toll collection system for highways, a cash card and credit card system for financial institutions, an entrance / exit management system, and a product management system in a factory.
RFID (Radio Frequency Identification) technology is used as technology for establishing communication with these non-contact IC cards. RFID is one of automatic recognition technologies for exchanging ID information between a contactless IC card and a card reader to recognize the other party and to communicate various data.

  The non-contact IC card includes an antenna coil, and in a non-contact IC card system using RFID technology, a communication path is established between the non-contact IC card and the card reader by electromagnetic coupling to exchange various information. The card reader emits an oscillating magnetic field (alternating magnetic field) having a predetermined frequency, and creates a reading space in a certain area near the card reader. If a non-contact IC card is placed in this reading space, the magnetic field lines radiated from the card reader wrap around the antenna coil loop built in the non-contact IC card from the lower side to the upper side and turn outward to move the outside of the loop to the upper side. A magnetic path is formed which passes from the bottom to the bottom and returns to the card reader again. Since the antenna coil and the card reader are electromagnetically coupled in this way, current is supplied to the non-contact IC card by electromagnetic induction, and the non-contact IC card and the card reader use the oscillation magnetic field of the predetermined frequency as a signal carrier wave. Communication takes place.

When using the system, the owner of the contactless IC card holds the contactless IC card over the card reader, exchanges ID information and communicates necessary data between the contactless IC card and the control system side via the card reader. I do.
In this way, card systems using contactless IC cards are spreading, but there are many users in particular, and a ticket gate card system for transportation is one that has been introduced in advance.
A so-called user's boarding ticket or commuter pass is a non-contact IC card, a card reader is incorporated on the upper surface of the ticket gate, and a control system is incorporated in the ticket gate. When a user holds a non-contact IC card, which is a ticket or commuter pass, over the card reader on the top of the ticket gate, ID information and necessary data are exchanged between the ticket gate and the non-contact IC card. The gate is properly opened and closed.

  Here, an important convenience for the non-contact IC card is that communication is performed between the ticket checker and the non-contact IC card in “non-contact”. The user can appropriately open and close the ticket gate by simply holding it over a card reader on the upper surface of the ticket gate with a non-contact IC card in a so-called commuter pass or wallet. On the other hand, in the case of a conventional contact IC card or magnetic card, the contact terminals of the card reader and the contact terminals provided on the surface of the IC card are brought into contact with each other to directly exchange electrical signals. Therefore, the user must take out the contact IC card from the commuter pass holder or wallet and insert it into the slot. This effort is inconvenient for the user. If it is a non-contact IC card, there is no such trouble and the convenience for the user is high.

Problems that impair the convenience of this contactless IC card have been pointed out.
The first problem is an interference problem when a plurality of contactless IC cards are used.
The second problem is information stealing due to skimming.
First, the first interference problem will be described.
Currently, the number of IC cards carried by users is increasing with the expansion of the usage range of IC cards.
In the case of a transportation card, the user transfers the routes of two railway companies for commuting, and if the ticket card system is not inter-connected between the railway companies, that is, the same contactless If the IC card cannot be shared, the user must hold two non-contact IC cards and use them separately.

However, if the user tries to pass through the ticket gate with two contactless IC cards stored in one commuter pass holder, a phenomenon occurs in which neither IC card can communicate normally. Therefore, when the card user holds it over the card reader, it is necessary to take out the necessary card from the holder and hold it over the interrogator, which causes a problem that the advantages of the original non-contact IC card are impaired.
In order to solve such a problem, for example, in Patent Document 1 below, an IC card in which an interference prevention body in which a pair of magnetic sheets are stacked with a conductive sheet sandwiched between two non-contact IC cards is interposed. Holders have been proposed. In addition, although this patent document 1 is an example in which a special IC card holder housing is provided, the principle of preventing the interference between both by sandwiching a conductive sheet between two non-contact IC cards will be described. Therefore, the principle will be explained by taking out only the interference prevention body except for the casing.

FIG. 28 is a view showing the structure of a conventional interference preventing body.
In FIG. 28, an exploded reference view is attached together with a front view and a side view for better understanding of the structure. The interference prevention body 1000 is configured by laminating a magnetic sheet 1002 having a pair of soft magnetic characteristics with a conductive sheet 1001 made of aluminum or the like interposed therebetween. Both the conductive sheet 1001 and the magnetic sheet 1002 are molded in substantially the same shape and size as the non-contact IC card.
When two non-contact IC cards C1 and C2 are held, the interference prevention body 1000 is put between the non-contact IC cards C1 and C2 and placed in a commuter pass. For example, when using one non-contact IC card C1, the position of the commuter pass is adjusted so that the non-contact IC card C1 is on the card reader side (that is, on the downward side because it faces the ticket gate). The card reader is held over the card reader so that only the non-contact IC card C1 is electromagnetically coupled with the card reader for communication, and the electromagnetic coupling between the non-contact IC card C2 and the card reader is cut off for communication.

The conductive sheet 1001 cancels the oscillation magnetic field. The principle that the conductive sheet 1001 cancels the oscillating magnetic field can be explained as follows. When the conductive sheet 1001 receives an oscillating magnetic field, an eddy current is generated in the conductive sheet, and a reverse magnetic field is generated by the eddy current. The magnetic field received from the card reader and the magnetic field that the conductive sheet 1001 returns in the opposite direction cancel each other, and the magnetic field does not pass through the conductive sheet 1001. That is, the oscillating magnetic field is canceled by the conductive sheet 1001. Further, it may be considered that the conductive sheet 1001 absorbs the oscillating magnetic field and converts the magnetic field energy into thermal energy.
Thus, if the conductive sheet 1001 is placed between the non-contact IC card and the card reader, the oscillation magnetic field radiated from the card reader is canceled and the oscillation magnetic field does not reach the non-contact IC card.

The magnetic sheet 1002 has an effect of drawing and radiating an oscillating magnetic field.
The reason why the magnetic sheet 1002 is laminated on the conductive sheet 1001 is to help form a magnetic path for accurately reading the non-contact IC card to be read. When only a bare conductive sheet 1001 is sandwiched between two non-contact IC cards, even if it is a non-contact IC card that directly faces the card reader of the ticket gate and receives an oscillating magnetic field, the conductive sheet is behind it. When 1001 is present, the oscillating magnetic field that has passed through the non-contact IC card to be read is offset by the conductive sheet 1001, and a magnetic path returning to the card reader side is not formed. That is, the card reader cannot communicate with the non-contact IC card to be read. Therefore, a magnetic sheet 1002 is provided on the surface of the conductive sheet 1001, and an oscillating magnetic field is drawn in and returned to the card reader side, thereby helping to form a magnetic path between the non-contact IC card C1 and the card reader.

For example, when using one non-contact IC card C1, the position of the commuter pass is adjusted so that the non-contact IC card C1 is on the card reader side (that is, on the downward side because it faces the ticket gate). Hold it over the card reader of the machine. When the entire commuter pass is placed in the reading space of the card reader, the oscillating magnetic field radiated by the card reader is absorbed by the magnetic sheet 1002 and forms a magnetic path that passes through the magnetic sheet 1002 and returns to the card reader side. Also, the magnetic field interlinking with the conductive sheet 1001 among the oscillating magnetic field of the card reader is canceled by the eddy current generated by the conductive sheet 1001, and does not affect the antenna coil of the other non-contact IC card C2. Therefore, the oscillating magnetic field of the card reader is electromagnetically coupled only with the antenna coil of the one non-contact IC card C1. There is no electromagnetic coupling with the antenna coil of the non-contact IC card C2. Thus, communication between the non-contact IC card C1 and the card reader is possible.
When the other non-contact IC card C2 is read, the position of the commuter pass is adjusted so that the non-contact IC card C2 is on the card reader side (that is, the downward side because it faces the ticket gate). If it is held over the card reader of the machine, the non-contact IC card C2 and the card reader can communicate with each other by the same principle as described above.

Next, the problem of information theft by skimming as the second problem will be described.
In conventional skimming, there are many cases in which information recorded on the magnetic stripe is stolen by illegally passing a bank card or a credit card of a credit sales company in which information is recorded on the magnetic stripe through a card reader.
However, due to recent improvements in skimming technology and the development of non-contact IC cards such as bank cash cards and credit card credit cards, there is concern about the spread of skimming crimes such as non-contact information theft using electromagnetic waves. . Since the victim is not likely to notice crimes that place the card reader near the user's pocket or bag containing the contactless IC card and steal information recorded in the IC card in a contactless manner by electromagnetic coupling, skimming There is a need for improved technology to prevent this.

As a conventional technique, techniques disclosed in Japanese Patent Application Laid-Open Nos. 10-307902 and 11-045316 are known. By making the card case itself that holds the non-contact IC card with a conductive material and blocking all electromagnetic waves that reach the non-contact IC card from the outside while the non-contact IC card is held in the card case. This prevents skimming. According to this prior art, when using a non-contact IC card, the non-contact IC card must be taken out from the card case and used.
JP 2000-268146 A Japanese Patent Laid-Open No. 10-307902 JP 11-045316 A

  In the conventional technique for preventing the interference which is the first problem, by providing the interference prevention body 1000 having the above-described configuration, it is possible to secure only the communication of the non-contact IC card located on the card reader side, An object is to achieve the purpose of preventing the interference of the non-contact IC card located on the opposite side of the card reader from the side.

  However, the above-described prior art interference prevention body 1000 may not achieve the above-mentioned object well. In the interference preventing body 1000 having the above prior art structure, only the non-contact IC card directly facing the card reader is electromagnetically coupled, and the non-contact IC card blocked by the interference preventing body 1000 is not electromagnetically coupled but directly to the card reader. The purpose is to communicate with the card reader only with the non-contact IC card facing each other. For example, the commuter pass is actually sandwiched between the two non-contact IC cards with the interference preventing body 1000 having the above-described conventional structure. If you put the commuter pass over the card reader of a railway ticket gate and put it in a slot, a communication error will occur, often causing a phenomenon that the ticket gate of the ticket gate does not operate normally. By the way, even when trying with a ticket gate of another railway company, a phenomenon that a communication error also occurred occurred.

  In the conventional technique for preventing skimming, which is the second problem, a card case made of a conductor is provided, and the non-contact IC card is held in the card case to block all electromagnetic waves from the outside. The purpose of preventing contact IC card skimming is to be achieved.

  However, the prior art skimming preventing means has a problem that it cannot be used unless it is taken out from the card case when the non-contact IC card is used. One of the merits of non-contact IC cards is that it is easy to operate by electromagnetic coupling between the card reader and non-contact IC card by simply holding it over the card reader. It is important to use the IC card with the non-contact IC card placed on the card reader. However, the above-described prior art skimming prevention means impairs this important merit and inconveniences that a non-contact IC card must be taken out of the card case every time it is used.

In view of the above-mentioned problems, the present invention separates both of them by sandwiching them between two non-contact IC cards, and a non-contact located on the card reader side with respect to an oscillating magnetic field of a predetermined frequency radiated by the card reader. An IC card access control body that securely and stably prevents interference of a non-contact IC card by preventing only the IC card from electromagnetic coupling and non-contact IC card located on the opposite side of the card reader from electromagnetic coupling. The purpose is to provide.
In addition, in view of the above-mentioned problems, the present invention reliably prevents skimming from the outside while maintaining the merit that the non-contact IC card can be used by holding the non-contact IC card in the card case and holding it over the card reader. An object of the present invention is to provide an IC card access control body that can be used.

In order to achieve the above object, a first IC card access controller of the present invention comprises a conductive sheet and a magnetic sheet laminated on the front side and the back side of the conductive sheet, respectively, and the shape of the magnetic sheet is The magnetic sheet is not laminated on the outer peripheral edge of the conductive sheet, and the shape is smaller than that of the conductive sheet.
With the above configuration, the card reader can obtain the effect of preventing the retraction and re-radiation of the magnetic force lines by the magnetic sheet located on the opposite side of the IC card access control body. It has the function of preventing interference from non-contact IC cards. The effect of preventing the retraction and re-radiation of magnetic field lines can be achieved by devising the shape of the magnetic sheet as described above, so that the magnetic field lines that have passed slightly outside the outer peripheral edge of the conductive sheet of the IC card access control body are outside the magnetic sheet. It is obtained by preventing the formation of a magnetic path that is drawn from the peripheral edge and goes into the magnetic sheet.

If the magnetic sheet is also laminated on the outer peripheral edge portion of the conductive sheet like the interference prevention body of the prior art, the magnetic lines of force that have passed slightly outside the outer peripheral edge of the conductive sheet will be at the outer peripheral edge of the magnetic sheet. Since it passes in the immediate vicinity, a magnetic path that is drawn from the outer peripheral edge of the magnetic sheet and goes into the magnetic sheet is formed.
However, in the case of the IC card access control body of the present invention, the outer peripheral edge of the magnetic sheet is inside the outer peripheral edge of the conductive sheet, so that the magnetic field lines passing slightly outside the outer peripheral edge of the conductive sheet are magnetic. It is not pulled in from the outer peripheral edge of the sheet.

Next, the first IC card access control body of the present invention is positioned on the lower side in addition to the function of preventing the interference of the non-contact IC card located on the upper side across the first IC card access control body. It is necessary to provide a function enabling reading of a non-contact IC card. Therefore, in order to enable reading of the non-contact IC card located on the lower side with high sensitivity, in the state where the non-contact IC card and the IC card access controller are overlapped, the outer peripheral edge of the magnetic sheet is the conductive material. It is assumed that it is located inside the outer peripheral edge of the sheet and outside the inner peripheral edge of the area where the antenna coil is provided.
With the configuration described above, an effect of assisting the drawing and re-radiation of magnetic field lines by the magnetic sheet facing the card reader can be obtained. In other words, the oscillating magnetic field radiated from the card reader of the ticket gate toward the non-contact IC card facing is efficiently drawn by the magnetic sheet and penetrates the loop of the antenna coil from the lower side to the upper side and then the outside of the antenna coil. It is possible to smoothly form a magnetic path that is re-radiated toward the outside of the antenna coil and passes through the outside of the loop of the antenna coil from the upper side to the lower side and returns to the card reader of the ticket gate.
In other words, in addition to the effect of preventing the retraction and re-radiation of magnetic lines by the magnetic sheet located on the opposite side of the IC card access controller, the card reader supports the retraction and re-emission of magnetic lines by the magnetic sheet facing the card reader. Both effects are obtained.

The specific numerical value depends on the position where the antenna coil of the non-contact IC card is provided. For example, the outer peripheral edge of the magnetic sheet is located 3 mm to 7 mm inside from the outer peripheral edge of the conductive sheet. be able to.
In the IC card access control body of the present invention configured as described above, the magnetic sheet is structured not to be laminated on the outer peripheral edge portion of the conductive sheet, and the outer peripheral edge of the magnetic sheet has a structure provided with a gap. The shape of the magnetic sheet is smaller than the shape of the conductive sheet without laminating the magnetic sheet on the outer peripheral edge portion of the conductive sheet, and the outer portion of the outer peripheral edge of the magnetic sheet is on the conductive sheet. It is good also as a structure which provides the strip | belt body which consists of nonelectroconductive material in this, and fills the space | gap of the outer periphery part of a magnetic sheet with a nonelectroconductive material. For example, a non-conductive material such as a plastic film does not draw magnetic lines of force unlike a magnetic sheet, and the above-described principle of the present invention can be realized.

In order to achieve the above object, the second IC card access control body of the present invention has one surface of the substrate as a skimming prevention surface, the other surface as an IC card utilization surface, and a single non-contact IC card as the above-mentioned one. One of the skimming prevention surface and the IC card use surface or two non-contact IC cards are held along the skimming prevention surface and the IC card use surface, respectively, and the non-contact IC card IC card access control body for controlling skimming prevention and usage support, comprising: a conductive sheet serving as the substrate; and a magnetic sheet laminated on the IC card utilization surface of the conductive sheet, wherein the shape of the magnetic sheet The shape is smaller than the shape of the conductive sheet without laminating the magnetic sheet on the outer peripheral edge of the conductive sheet.
With the above configuration, when the card reader is positioned so as to face the IC card utilization surface, an oscillating magnetic field of a predetermined frequency radiated from the card reader can be drawn and re-radiated by the magnetic sheet. And the card reader can be supported, and when the card reader is positioned so as to face the skimming prevention surface, the oscillating magnetic field of a predetermined frequency radiated from the card reader can be blocked by the conductive sheet. The magnetic sheet on the side where the IC card is used has the effect of preventing the drawing of magnetic field lines and the re-radiation, and electromagnetic coupling between the non-contact IC card and the oscillating magnetic field can be prevented. In this way, skimming from the outside can be reliably prevented while maintaining the merit that the non-contact IC card can be used by holding the non-contact IC card in the card case and holding it over the card reader.

Next, the second IC card access control body of the present invention draws in electromagnetic waves from a card reader located on the IC card use surface side in addition to the function of blocking the electromagnetic waves from the skimming prevention surface described above, and is a non-contact IC. It is necessary to provide a function that enables reading of the card. Therefore, in order to enable reading of the non-contact IC card located on the IC card utilization surface side with high sensitivity, the outer peripheral edge of the magnetic sheet is in a state where the non-contact IC card and the IC card access control body are overlapped. It is assumed that it is located inside the outer peripheral edge of the conductive sheet and outside the inner peripheral edge where the antenna coil is provided.
With the above configuration, the oscillating magnetic field radiated from the card reader located on the IC card utilization surface side is efficiently drawn by the magnetic sheet, penetrates the loop of the antenna coil from the lower side to the upper side, and then faces the outside of the antenna coil. Thus, a magnetic path that is re-radiated and passes through the outside of the loop of the antenna coil from the upper side to the lower side and returns to the card reader can be smoothly formed. That is, in addition to the function of preventing skimming from the card reader located on the skimming prevention surface with the second IC card access control body 100 interposed therebetween, the card reader and the non-contact IC card efficiently located on the IC card utilization surface side Can be controlled electromagnetically.

The specific numerical value depends on the position where the antenna coil of the non-contact IC card is provided as described above. For example, the outer peripheral edge of the magnetic sheet is 3 mm to 7 mm inward from the outer peripheral edge of the conductive sheet. It can be located.
Similarly to the first IC card access control body, a band made of a non-conductive material is provided on the conductive sheet on the outer peripheral portion of the magnetic sheet, and the gap in the outer peripheral portion of the magnetic sheet is made non-conductive. A structure filled with a material can also be used.

According to the IC card access control body of the present invention, the IC card access control body is sandwiched between two non-contact IC cards and is held over the card reader so that the IC card access control body is positioned on the lower side (the lower surface facing the card reader). Only the non-contact IC card that communicates with the card reader can prevent interference between them without communicating with the non-contact IC card located on the upper side (the upper surface side blocked by the IC card access control body). .
According to the IC card access control body of the present invention, by using a non-contact IC card along with the IC card access control body, if the non-contact IC card is placed in the card case and held over the card reader, the non-contact IC card is used. While maintaining the merit that the card can be used, skimming from the outside can be surely prevented.

  Embodiments of an IC card access controller according to the present invention will be described below with reference to the drawings. However, it goes without saying that the scope of the present invention is not limited to the specific shapes, numbers, angles, etc. shown in the following examples.

The first IC card access control body of the present invention is sandwiched between two non-contact IC cards and separated from each other, and is positioned on the card reader side with respect to an oscillating magnetic field of a predetermined frequency radiated by the card reader. This is an IC card access control body that prevents interference by only electromagnetically coupling non-contact IC cards to be performed and preventing non-contact IC cards located on the side opposite to the card reader side from electromagnetic coupling.
A first IC card access control body according to Example 1 includes a conductive sheet and a magnetic sheet laminated on each of the front side and the back side of the conductive sheet, and the shape of the magnetic sheet is changed to the outer peripheral edge of the conductive sheet. It is characterized in that the magnetic sheet is not laminated on the part.

First, the basic principle of the first IC card access controller of the present invention will be described.
Fig.1 (a) is a figure which shows typically the top view and side view of the 1st IC card access control body 100 of this invention. FIG. 1B schematically shows a plan view and a side view of a conventional interference preventing body 1000 for comparison with the present invention.
FIG. 2A is a schematic side view (cross section) showing that no interference occurs when two non-contact IC cards are held over a card reader using the first IC card access controller 100 of the present invention. FIG. Note that FIG. 2B schematically shows from the side surface (cross section) how interference actually occurs in the interference preventing body 1000 of the prior art for comparison with the present invention.

As shown in FIG. 1A, the first IC card access control body 100 of the present invention has magnetic sheets laminated on the front side and the back side of the conductive sheet. The portion has a shape in which no magnetic sheet is laminated. That is, only the conductive sheet is provided at the outer peripheral edge portion of the first IC card access control body 100, the magnetic sheet is not provided, and the outer peripheral edge of the magnetic sheet is the outer peripheral edge of the conductive sheet. It is slightly inside from the end.
How much inside is taken into consideration is the strength of the oscillating magnetic field of the card reader, the position of the antenna coil incorporated in the non-contact IC card, and the like. This point will be described later.
Although the size of the conductive sheet, the outer peripheral edge of the conductive sheet is positioned outside the outer peripheral edge of the area where the antenna coil is provided in a state where the non-contact IC card and the IC card access control body are overlapped. It shall be. That is, in order to prevent interference, the conductive sheet has a size and a positional relationship covering the antenna coil of the non-contact IC card placed on the upper side of the IC card access control body.

On the other hand, as shown in FIG. 1 (b), the interference preventing body 1000 of the prior art has a magnetic sheet 102 laminated on the entire surface of both surfaces of the conductive sheet 101. That is, the magnetic sheet is also provided at the outer peripheral edge portion of the conductive sheet.
The state of electromagnetic coupling when the first IC card access controller 100 having the above configuration is sandwiched between two contactless IC cards and held over the card reader of the ticket gate will be examined.

First, the case of the interference preventing body 1000 of the prior art will be described.
In the cross-sectional view of FIG. 2 (b), there is a card reader 300 of the ticket gate at the bottom, and the non-contact IC card 200a is positioned on the upper side and the non-contact IC card 200b is positioned on the lower side with the interference preventing body 1000 of the prior art interposed is doing. The antenna coil 210 is schematically shown in cross section of a loop-shaped antenna coil.
As shown in FIG. 2 (b), in the interference preventing body 1000 of the prior art, a magnetic path FLb passing through the antenna coil 210b of the non-contact IC card 200b located on the lower side is formed, and further, outside the conductive sheet. Since the magnetic sheet is also provided at the peripheral edge portion, the magnetic lines of force that have passed slightly outside the outer peripheral edge of the conductive sheet are drawn into the magnetic sheet from the outer peripheral edge of the magnetic sheet, and again from the inner portion of the magnetic sheet. A magnetic path FLa that exits and returns to the card reader of the ticket gate is also formed. The magnetic path passes through the antenna coil 210a of the upper non-contact IC card 200a. As a result, both the lower non-contact IC card 200b and the upper non-contact IC card 200a are electromagnetically connected to the card reader of the ticket gate 300. Combined to cause interference. As described above, the conventional interference preventing body 1000 has a problem that interference actually occurs.

Next, the case of the first IC card access controller 100 of the present invention will be described.
FIG. 2A is a diagram schematically showing from the side surface (cross section) how interference is prevented by the first IC card access controller 100 of the present invention. Also in FIG. 2 (a), there is a card reader of a ticket gate below, and a non-contact IC card 200a on the upper side and a non-contact IC card 200b on the lower side with the first IC card access control body 100 of the present invention interposed therebetween. positioned. The antenna coil 210 is schematically shown in cross section of a loop-shaped antenna coil.
As shown in FIG. 2A, in the first IC card access control body 100 of the present invention, a magnetic path FLb that passes through the antenna coil 210b of the non-contact IC card 200b located on the lower side is formed, Since the outer peripheral edge of the magnetic sheet is slightly inside the conductive sheet, the magnetic force lines that have passed slightly outside the outer peripheral edge of the conductive sheet are not directly drawn by the magnetic sheet 102, and the first IC card access control is performed as it is. A magnetic path FLa that passes through the outside of the body 100 and returns to the card reader 300 of the ticket gate is formed. This magnetic path FLa becomes a magnetic path that does not pass through the antenna coil 210a of the upper non-contact IC card. Eventually, only the lower non-contact IC card 200b is electromagnetically coupled to the card reader of the ticket gate, and the upper non-contact IC card is not contacted. The IC card 200a does not interfere. Thus, the first IC card access controller 100 of the present invention can effectively prevent the occurrence of interference.
The above is the basic principle of the first IC card access controller of the present invention.

  Next, the function that enables reading of the non-contact IC card located on the lower side with high sensitivity will be examined. The shape of the magnetic sheet affects the reading sensitivity of the non-contact IC card located on the lower side as well as preventing interference of the non-contact IC card located on the upper side of the first IC card access control body as described above. In the first IC card access control body 100 of the present invention, the extent to which the outer peripheral edge of the magnetic sheet is located from the outer peripheral edge of the conductive sheet depends on the strength of the oscillating magnetic field of the card reader and the non-contact IC card. The position is determined in consideration of the position of the antenna coil incorporated in the antenna. In the first IC card access control body 100 of the present invention, in a state where the non-contact IC card and the first IC card access control body are overlapped, the outer peripheral edge of the magnetic sheet is inside the outer peripheral edge of the conductive sheet and the antenna. It shall be located outside the inner periphery of the area where the coil is provided.

  FIG. 3 is a diagram schematically illustrating a positional relationship between the first IC card access controller 100 and the antenna coil of the non-contact IC card according to the first embodiment of the present invention by a cross section. FIG. 4 is a diagram for explaining the inner and outer peripheral edges of the area where the antenna coil is provided.

  First, referring to FIG. 4, the inner peripheral edge and the outer peripheral edge where the antenna coil is provided are defined. In FIG. 4, an antenna coil having a rectangular shape is taken as an example. The antenna coil is formed in a flat shape, and a conductive wire by thin film printing is wound around a predetermined number of times. Here, the inner periphery of the area where the antenna coil is provided is the boundary around which the innermost conductor is wound, and the outer periphery of the area where the antenna coil is provided is the outer periphery of the conductor. It is a boundary. In the example of FIG. 4, 210-1 is the inner periphery of the area, and 210-2 is the outer periphery of the area. FIG. 3 schematically shows only the left side of the cross section in a state where the IC card access control body and the non-contact IC card are overlapped, and the cross section of the antenna coil 210 is schematically shown by a black square. However, the left end of the black square is the outermost periphery of the antenna coil, that is, the outer periphery of the area where the antenna coil is provided, and the right end of the black square is the innermost periphery of the antenna coil, that is, the antenna coil is provided. Corresponds to the inner periphery of the area.

Returning to FIG. 3, the description of the positional relationship between the first IC card access control body 100 and the antenna coil of the non-contact IC card according to the first embodiment of the present invention will be continued.
In the first IC card access control body 100 of the present invention, as shown in FIG. 3A, the outer peripheral edge of the conductive sheet in a state where the non-contact IC card and the first IC card access control body are overlapped. 101 is located outside the outer peripheral edge of the area where the antenna coils 210a and 210b are provided, and the outer peripheral edge of the magnetic sheet 102 is inside the outer peripheral edge of the conductive sheet 101 and within the area where the antenna coils 210a and 210b are provided. It is located outside the periphery.
With such a positional relationship, the magnetic field lines passing just outside the outer peripheral edge of the conductive sheet 101 form a magnetic path FLa that is not drawn by the magnetic sheet 102 and returns to the card reader 300 as it is. Further, the magnetic lines emitted from the inner side of the lower non-contact IC card 200b are drawn by the lower magnetic sheet 102, re-emitted from the vicinity of the outer peripheral edge of the lower magnetic sheet 102, and returned to the card reader. FLb is formed. FLb crosses the antenna coil 210b of the lower non-contact IC card and forms a magnetic path, and is electromagnetically coupled. As described above, the communication between the upper non-contact IC card 200a and the card reader is cut off, and the communication sensitivity between the lower non-contact IC card 200b and the card reader is increased.

On the other hand, for the purpose of comparison, the one shown in FIG. In FIG. 3B, the outer peripheral edge 101 of the conductive sheet is located outside the outer peripheral edge of the area where the antenna coils 210a and 210b are provided, but the outer peripheral edge of the magnetic sheet 102 is the outer peripheral edge of the conductive sheet 101 and The antenna coils 210a and 210b are located on the inner side of the inner peripheral edge of the area.
In this case, the magnetic lines of force that pass just outside the outer peripheral edge of the conductive sheet 101 form a magnetic path FLa that returns to the card reader 300 without being pulled by the magnetic sheet 102, as in FIG. Magnetic field lines emitted from the slightly inner side of the non-contact IC card 200b are drawn by the lower magnetic sheet 102, and are re-emitted from the vicinity of the outer peripheral edge of the lower magnetic sheet 102 to form a magnetic path FLb that returns to the card reader. Both the magnetic path FLa and the magnetic path FLb are magnetic paths that do not intersect with the antenna coils 210a and 210b of the non-contact IC card, and electromagnetic coupling does not occur. Thus, if the positional relationship between the magnetic sheet and the antenna coil of the non-contact IC card is the positional relationship shown in FIG. 3B, not only the upper non-contact IC card 200a but also the lower non-contact IC card 200b. As a result, it is understood that the communication is not suitable as an IC card access control body.

(Experiment)
Next, the above-described first IC card access control body of the present invention is prototyped, and using a card reader, the interference prevention performance of the non-contact IC card positioned above the first IC card access control body is The reading performance of the non-contact IC card located on the side was confirmed.
As the card reader, the card reader portion of the ticket gate of JR West (West Japan Railway Company) was used.
As the non-contact IC card, “ICOCA (TM)” issued by JR West (West Japan Railway Company) was used.
In order to make a comparative experiment, four patterns as shown in FIG. 5 were made as the shape of the magnetic sheet, and the respective performances were confirmed. The size of the conductive sheet of the IC card access control body of each pattern is substantially the same as that of the non-contact IC card. In addition, when the IC card access control body of each pattern and the non-contact IC card are overlapped, the IC card access control body of each pattern is easy to grasp where the antenna coil in the non-contact IC card overlaps. The portion where the antenna coil overlaps on the magnetic sheet is written as a thin broken line. In this example, the antenna coil has an anti-collision type so-called tree leaf shape.

The pattern 1 has a shape in which a magnetic sheet is laminated on the entire surface of the conductive sheet, like the interference preventing body 1000 of the prior art.
Pattern 2 is obtained by removing the outer peripheral edge of the magnetic sheet of pattern 1 with a width of 5 mm. This pattern 2 is a pattern having conditions for the magnetic sheet of the first IC card access controller 100 of the present invention. The outer peripheral edge of the magnetic sheet 102 is inside the outer peripheral edge of the conductive sheet 101 and the antenna coil. The inner peripheral edge of the area where 210a and 210b are provided (the leaf-shaped inner peripheral edge shown by the broken line in the pattern) is located outside.
The pattern 3 is obtained by removing the magnetic sheet of the pattern 1 where the antenna coil of the non-contact IC card overlaps when superposed on the non-contact IC card. That is, it is cut out into an anti-collision type so-called leaf type.
The pattern 4 is obtained by removing the inner side of the magnetic sheet of the pattern 1 and removing the inner side of the portion that overlaps the antenna coil of the non-contact IC card when it is superimposed on the non-contact IC card. .
Of the above four patterns, pattern 2 is a configuration example of the first IC card access controller according to the first embodiment of the present invention. That is, the magnetic sheet is not laminated on the outer peripheral edge portion of the conductive sheet, and the outer peripheral edge of the conductive sheet is located outside the outer peripheral edge of the area where the antenna coil is provided, The outer peripheral edge is located inside the outer peripheral edge of the conductive sheet and outside the inner peripheral edge of the area where the antenna coil is provided.

FIG. 6 is a diagram for explaining a method of a non-contact IC card reading experiment.
Since it is difficult to simultaneously perform the communication blocking performance experiment of the upper non-contact IC card and the lower non-contact IC card, they were performed separately.
FIG. 6A is a diagram for explaining a method of a communication cutoff performance experiment for the upper non-contact IC card. The non-contact IC card 200a is placed on the upper side (opposite side of the card reader) of the first IC card access control body 100 of the present invention and is brought close to the card reader as it is, and the non-contact IC card is used by the card reader. It is determined that the communication cut-off has failed when 200a is read. That is, the distance (reaction distance) at the time when the non-contact IC card 200a is read is evaluated as the communication interruption performance.
FIG. 6B is a diagram for explaining a communication performance experiment method for the lower non-contact IC card. The non-contact IC card 200b is held on the lower side (card reader side) of the first IC card access control body 100 of the present invention, and is brought close to the card reader as it is, and the non-contact IC card 200b is read by the card reader. It is determined that the communication has been successful at that time. That is, the distance (reaction distance) at the time when the non-contact IC card 200b is read is evaluated as the communication performance.

FIG. 7 is a diagram showing the results of the communication blocking performance experiment for the upper non-contact IC card and the communication performance experiment for the lower non-contact IC card.
The vertical axis represents the reaction distance. The horizontal axis is the pattern of the magnetic sheet, which is Pattern 1, Pattern 2, Pattern 3, and Pattern 4 from the left.
In each pattern, the left bar graph is a graph showing the communication cutoff performance of the upper non-contact IC card, and the right bar graph is a graph showing the communication performance of the lower non-contact IC card.

  The following could be confirmed from the result of pattern 1 in FIG. The communication performance of the lower non-contact IC card is about 6.5 cm, and the non-contact IC card located on the lower side (card reader side) of the first IC card access controller 100 is read by the card reader with good performance. I understood that. On the other hand, the communication performance of the upper non-contact IC card is about 3.5 cm, and the non-contact IC card located on the upper side of the first IC card access control body 100 (the side opposite to the card reader) has a blocking performance of It turns out that it does not work and is read by a card reader.

  The following could be confirmed from the result of pattern 2 in FIG. The communication performance of the lower non-contact IC card is about 5 cm, and the non-contact IC card located on the lower side (card reader side) of the first IC card access controller 100 can be read by the card reader with good performance. I understood. On the other hand, the upper non-contact IC card did not react at all and could not be read (blocked). In other words, it was confirmed that the non-contact IC card located on the upper side (opposite side of the card reader) of the first IC card access controller 100 does not interfere with the blocking performance.

  The following could be confirmed from the result of pattern 3 in FIG. The upper non-contact IC card did not react at all and could not be read (blocked), and the lower non-contact IC card could not be read due to an error (error). That is, the non-contact IC card located on the upper side (opposite side of the card reader) of the first IC card access controller 100 does not interfere with the blocking performance, but the first IC card access controller It was confirmed that the non-contact IC card located below 100 (card reader side) cannot exhibit communication performance. This phenomenon is that if there is no magnetic sheet behind the antenna coil of the lower non-contact IC card and only the conductive sheet 101 is present, the oscillating magnetic field passing through the antenna coil 210 of the non-contact IC card to be read is directly applied to the conductive sheet 101. This occurs because the magnetic path is canceled and a magnetic path returning to the card reader side is not formed. If the magnetic sheet 102 is provided, it is possible to form a magnetic path for drawing an oscillation magnetic field and returning it to the card reader side. However, in the pattern 3, the shape of the magnetic sheet is a shape that helps the formation of the magnetic path. Absent.

  The following could be confirmed from the result of pattern 4 in FIG. The communication performance of the lower non-contact IC card is about 4.5 cm, and the non-contact IC card located on the lower side (card reader side) of the first IC card access controller 100 is read by the card reader with good performance. I understood that. On the other hand, the communication performance of the upper non-contact IC card is about 0.5 cm, and the non-contact IC card located on the upper side of the first IC card access control body 100 (the side opposite to the card reader) has a blocking performance of It was found that it was insufficient and could be read by a card reader. It is considered that the state shown in FIG. 2B has occurred, and the non-contact IC card located above the first IC card access controller 100 (on the side opposite to the card reader) has sufficient blocking performance. I can't say.

From the above experiment, if the shape of the magnetic sheet is the same as that of the interference prevention body of the prior art, the communication blocking performance for the upper non-contact IC card as the first IC card access control body becomes insufficient, and the antenna coil If the magnetic sheet in the corresponding position is removed, the communication performance for the lower non-contact IC card is not sufficiently exerted, and the magnetic sheet with the shape just removed from the inner side of the antenna coil is not compatible with the upper non-contact IC card. It was found that the communication interruption performance was insufficient.
If the magnetic sheet having the pattern 2 is used like the first IC card access control body of the present invention, the communication blocking performance for the upper non-contact IC card as the first IC card access control body is sufficiently exhibited. It was confirmed that the communication performance for the lower non-contact IC card was sufficiently exhibited.

  Next, an experiment was conducted on how much the outer peripheral edge of the magnetic sheet should be inside the outer peripheral edge of the conductive sheet. It is necessary to consider how much the inside is to be taken into consideration, such as the strength of the oscillating magnetic field of the card reader, the position of the antenna coil built in the non-contact IC card, the relationship between the size of the conductive sheet and the IC card. FIG. 7 shows the result of measuring the communication blocking performance for the upper non-contact IC card and the communication performance for the lower non-contact IC card while changing the distance between the outer peripheral edge of the conductive sheet and the outer peripheral edge of the magnetic sheet. FIG. As above, the card reader used was a ticket reader of JR West Japan (West Japan Railway Company). Similarly to Example 1, the non-contact IC card used was “ICOCA (TM)” issued by JR West (West Japan Railway Company).

As shown in FIG. 8, the communication blocking performance for the upper non-contact IC card starts to be exhibited when the outer peripheral edge of the magnetic sheet is 3 mm inside from the outer peripheral edge of the conductive sheet. Communication was interrupted with high accuracy. On the other hand, the communication performance with respect to the lower non-contact IC card was exhibited accurately from the outer peripheral edge of the magnetic sheet up to about 5 mm from the outer peripheral edge of the conductive sheet, but when it became 9 mm inside It turned out that communication performance cannot be demonstrated. As an example, the combination of the card reader and the non-contact IC card tested as an example is a range of 3 to 7 mm as a range in which both the communication blocking performance for the upper non-contact IC card and the communication performance for the lower non-contact IC card are secured. It is preferable that about 5 mm is most stable.
In the case of the first IC card access control body of pattern 2 in this experiment, a cybernetic standard anti-collision coil antenna (so-called leaf-shaped coil antenna) adopted in JR West's "ICOCA" used in this experiment. In addition, any rectangular coil antenna that has been widely used, such as “EDi” that is widely used as electronic money, can be applied, and is highly versatile.

The first IC card access control body of Example 2 is a device in which the area of the magnetic sheet is devised to reduce costs while suppressing performance deterioration as the first IC card access control body of the present invention. .
In the first IC card access controller according to the first embodiment, the shape of the magnetic sheet is such that the magnetic sheet is not laminated on the outer peripheral edge portion of the conductive sheet. The access control body is formed by removing a portion corresponding to the area inside the area where the antenna coil of the non-contact IC card is provided in the shape of the magnetic sheet.

FIG. 9 is a diagram schematically illustrating the shape pattern of the magnetic sheet of the first IC card access control body according to the second embodiment. Pattern 5 is the shape pattern of the magnetic sheet of the first IC card access control body of Example 2. For easy understanding, the pattern 1 used in FIG. 5 of Example 1 is shown again.
In FIG. 9 also, when the first IC card access control body of each pattern and the non-contact IC card are overlapped, it is easy to grasp where the antenna coil in the non-contact IC card overlaps. The portion where the antenna coil overlaps is written as a thin broken line on the magnetic sheet of the first IC card access control body of each pattern. In this example, the antenna coil has an anti-collision type so-called tree leaf shape.

  The pattern 5 of Example 2 is the same as the pattern 2 of FIG. 5 of Example 1, except that the outer peripheral edge of the magnetic sheet of the pattern 1 is removed with a width of 5 mm. The shape is such that a margin of about 5 mm width is left from the inner edge of the leaf-shaped area), and the inner part is removed. That is, the shape of the magnetic sheet of the pattern 5 in Example 2 is such that the magnetic field lines radiated upward from the card reader in the state where the IC card access control body and the non-contact IC card are overlapped with each other. The shape is such that it is drawn from a margin portion having a width of about 5 mm located slightly inside the antenna coil of the card and reradiates outward from the outer peripheral edge of the magnetic sheet. The magnetic path whose formation is promoted by the shape of the magnetic sheet of this pattern 5 intersects with the antenna coil of the non-contact IC card, ensuring the communication performance of the non-contact IC card on the lower side (card reader side) It is supposed to be. Compared with pattern 2 of Example 1, there is no magnetic sheet in the central part, so the pulling of the magnetic field lines is small and the communication performance is slightly inferior. However, the communication performance is possible because the magnetic field lines can be drawn slightly inside the antenna coil. It is possible to secure As for the communication blocking performance for the non-contact IC card on the upper side (the side opposite to the card reader), the magnetic sheet is not provided on the outer peripheral edge of the conductive sheet. There is no wraparound of magnetic lines of force from the periphery, and the communication blocking performance of the non-contact IC card on the upper side (the side opposite to the card reader) is secured.

(Experiment)
Next, the first IC card access control body having the shape of the magnetic sheet of the pattern 5 described above is made as a prototype, and a non-contact IC card located above the first IC card access control body is used by using a card reader. Interference prevention performance and reading performance of the non-contact IC card located below were confirmed.
As in Example 1, a card reader of a ticket gate of JR West (West Japan Railway Company) was used.
Similarly to Example 1, the non-contact IC card used was “ICOCA (TM)” issued by JR West (West Japan Railway Company).

FIG. 10 is a diagram showing an experimental result using the first IC card access control body having the magnetic sheet of the pattern 5 shown in FIG.
For comparison, the first IC card access control body having the shape of the magnetic sheet of pattern 1 and pattern 2 of Example 1 was also plotted.
The following could be confirmed from the result of pattern 5 in FIG. The communication performance of the lower non-contact IC card is about 4 cm, and the non-contact IC card located on the lower side (card reader side) of the first IC card access controller 100 can be read by the card reader with good performance. I understood. On the other hand, the upper non-contact IC card cannot be read in the same manner as the pattern 2, and the non-contact IC card located on the upper side (opposite to the card reader) of the first IC card access controller 100 has a blocking performance. It was confirmed that there was no interference by working.

  The first IC card access control body according to the third embodiment is similar to the first embodiment in that the magnetic sheet has a shape in which the magnetic sheet is not laminated on the outer peripheral edge portion of the conductive sheet. A belt made of a non-conductive material is provided at the peripheral portion.

  FIG. 11 is a schematic diagram of a plan view and a side view of the first IC card access control body according to the third embodiment. As in FIG. 1A, the shape of the magnetic sheet 102 is a shape in which the magnetic sheet is not laminated on the outer peripheral edge portion of the conductive sheet, but the gap is not left and is made of a non-conductive material such as plastic. A band 103 is provided. The non-conductive material does not have the ability to draw and re-radiate magnetic force lines like a magnetic sheet, and does not draw magnetic force lines that pass slightly outside the conductive sheet.

  FIG. 12 is a diagram schematically showing from the side how interference does not occur when two non-contact IC cards are held over a card reader using the first IC card access controller 100 according to the third embodiment. It is. As in FIG. 2 (a), the outer peripheral edge of the magnetic sheet is slightly inside the conductive sheet because of the non-conductive band 103, and therefore passes slightly outside the outer peripheral edge of the conductive sheet. A magnetic path FLa that passes through the outside of the first IC card access control body 100 as it is without being drawn by the magnetic sheet 102 and returns to the card reader 300 of the ticket gate is formed by the magnetic sheet 102. This magnetic path FLa becomes a magnetic path that does not pass through the antenna coil 210a of the upper non-contact IC card. Eventually, only the lower non-contact IC card 200b is electromagnetically coupled to the card reader of the ticket gate, and the upper non-contact IC card is not contacted. The IC card 200a does not interfere. As described above, the first IC card access control body according to the third embodiment can effectively prevent the occurrence of interference in the same manner as the first IC card access control body according to the first embodiment.

As a fourth embodiment, an example of the second IC card access control body of the present invention will be shown.
In the second IC card access control body of the present invention, one surface of the substrate is a skimming prevention surface and the other surface is an IC card utilization surface.
A second IC card access control body according to Example 4 includes a conductive sheet serving as a substrate and a magnetic sheet laminated on the IC card utilization surface of the conductive sheet, and the shape of the magnetic sheet is adjusted to the outside of the conductive sheet. A magnetic sheet is not laminated on the peripheral portion, and the shape is smaller than that of the conductive sheet. The surface on which the magnetic sheet is not laminated is defined as a skimming prevention surface, and the surface on which the magnetic sheet is laminated is defined as an IC card utilization surface.

FIG. 13 is a diagram schematically showing a skimming prevention surface, a side surface, and an IC card utilization surface of the second IC card access controller 500 of the present invention.
As shown in FIG. 13, the second IC card access control body 500 has a structure in which a conductive sheet 501 serving as a substrate and a magnetic sheet 502 are laminated on one surface (IC card utilization surface) of the conductive sheet 501. It has become.
In the example shown in Example 4, the shape of the magnetic sheet 502 is devised. A magnetic sheet is not laminated on the outer peripheral edge portion of the conductive sheet 501 serving as a substrate, and the shape of the magnetic sheet 502 is smaller than that of the conductive sheet 501 serving as a substrate. That is, the magnetic sheet 502 is not laminated on the outer peripheral edge portion on the IC card utilization surface, and the magnetic sheet 502 is laminated slightly from the inner portion to the center. Note that the magnetic sheet 502 is not laminated on the skimming prevention surface, and the conductive sheet 501 as a substrate is exposed.

Here, the relationship between the size of the conductive sheet 501 serving as the substrate and the size of the magnetic sheet 502 is the same as in the first embodiment in the state where the non-contact IC card 200 and the second IC card access controller 500 are overlapped. The outer peripheral edge of the conductive sheet 501 is positioned outside the outer peripheral edge 211 where the antenna coil is provided, the outer peripheral edge of the magnetic sheet 502 is located inside the outer peripheral edge of the conductive sheet 502, and the antenna coil is provided. It is assumed that it is located outside the area inner periphery 212.
By adding the above-described device to the shape of the magnetic sheet 502, as shown in the first embodiment, when the card reader is on the IC card use surface side, the magnetic sheet draws the lines of magnetic force to support re-radiation. Aiming to prevent the phenomenon of re-radiating by drawing magnetic lines from the outer peripheral edge of the magnetic sheet on the IC card use surface side when the card reader is on the skimming prevention surface side. Yes.

The second IC card access controller 500 according to the fourth embodiment has at least three basic usage modes. FIG. 14 is a diagram schematically showing each basic usage mode of the second IC card access controller 500.
FIG. 14A shows a first usage mode. The first usage mode is a usage mode in which at least one non-contact IC card is held along the skimming prevention surface to prevent skimming of the non-contact IC card.
FIG. 14B shows a second usage mode. The second usage mode is a usage mode in which at least one non-contact IC card is held along the IC card usage surface, and two controls, prevention of skimming of the non-contact IC card and card usage support, are performed.
FIG. 14C shows a third usage mode. In the third usage mode, one of at least two non-contact IC cards is held along the skimming prevention surface and the other one is held along the IC card use surface to prevent skimming of the non-contact IC card and the IC. This is a usage mode in which two controls for use support of an IC card on the card usage side are performed.
In each usage mode, the non-contact IC card and the IC card access control body are put in a general card case made of leather or cloth and used.

First, the first usage mode will be described.
In the first use mode, a non-contact IC card is held so as to be along the skimming prevention surface, and held in the card case 700, for example, in a breast pocket. In the first mode of use, the card case can be held freely and may be held with the skimming prevention surface side facing the outer surface side as shown in FIG. 15 (a), as shown in FIG. 15 (b). You may have an IC card utilization surface side toward the outer surface side. Either way, the skimming prevention effect can be obtained.

  FIG. 16 is a diagram schematically showing the skimming prevention effect in the first usage mode. FIG. 16 shows a cross section, and the antenna coil 210 is schematically shown as a quadrangle as a cross section of the loop antenna coil. Reference numeral 211 denotes an outer peripheral edge of the antenna coil area, and 212 denotes an inner peripheral edge of the antenna coil area.

  FIG. 16A shows the flow of magnetic lines of force when the skimming prevention surface side is located on the outer surface. In the first usage mode, when the skimming prevention surface is located on the outer surface, the non-contact IC card 500 is in a position facing the card reader 300. However, as described in the first embodiment, when the conductive sheet 500 is in close contact behind the non-contact IC card 200, the non-contact IC card 200 and the card reader 300 cannot be electromagnetically coupled well. In this phenomenon, the oscillating magnetic field (FLb) that has passed through the antenna coil 210 of the non-contact IC card to be read is canceled by the conductive sheet 501 as it is, and a magnetic path (magnetic path indicated by a dotted line) returning to the card reader side is formed. It happens because it is not. In this way, when the skimming prevention surface is provided on the outer surface side in the first usage mode, the effect of preventing skimming is obtained even if the skimming is tried from the outside.

Next, FIG. 16B shows the flow of magnetic lines of force when the IC card utilization surface is located on the outer surface. In the first usage mode, when the IC card utilization surface is located on the outer surface, the conductive sheet 501 is between the non-contact IC card 200 and the card reader 300. As described in the first embodiment, the magnetic sheet 502 draws the magnetic field lines (FLb) radiated from the card reader 300 and re-radiates them. However, the non-contact IC card 200 and the card reader 300 are separated by the presence of the conductive sheet 501. Cannot be electromagnetically coupled. As described above, in the first usage mode, when the IC card utilization surface is located on the outer surface side, an effect of preventing skimming is obtained even if skimming is attempted from the outside.
As described above, in the first usage mode, it can be understood that the skimming prevention effect can be obtained regardless of the holding method shown in FIGS. 16 (a) and 16 (b).

(Experiment)
Next, the second IC card access control body of the present invention was actually manufactured as a prototype, and the skimming prevention performance in the case of the first usage mode was confirmed by experiments. As the card reader, the card reader portion of the ticket gate of JR West (West Japan Railway Company) was used. As the non-contact IC card, “ICOCA (TM)” issued by JR West (West Japan Railway Company) was used. The pattern 2 shown in FIG. 5 was adopted as the shape of the magnetic sheet.

  In the experiment, the card reader 300 was installed as if it were a skimming card reader. A second IC card access controller 500 and a non-contact IC card 200 were placed in the card case 700, and the non-contact IC card 200 was placed along the skimming prevention surface of the second IC card access controller 500. Then, the card reader 700 is gradually brought closer to the card reader 300 so that the skimming prevention surface is on the card reader 300 side (a relationship corresponding to FIG. 16A). Holding the card case 700 so that the IC card utilization surface is on the card reader 300 side (relationship corresponding to FIG. 16B). A second measurement was performed to gradually approach the card reader 300 and measure the reaction distance when the card reader 300 was able to read from the non-contact IC card 200.

FIG. 17 shows the result of the confirmation experiment in the case of the first usage mode.
As shown on the left side of FIG. 17, the reaction distance on the skimming prevention surface side is 0, that is, the information on the non-contact IC card 200 could not be read even if the card case 700 was brought close to the card reader 300. .
Next, as shown on the right side of FIG. 17, the reaction distance on the IC card utilization surface side is also 0, that is, the information of the non-contact IC card 200 is read even if the card case 700 is brought into close contact with the card reader 300. I couldn't.
From the above, it was confirmed that the second IC card access controller 500 of the present invention has a good skimming prevention effect regardless of how it is held in the first usage mode.

Next, the second usage mode will be described.
In the second usage mode, the non-contact IC card is held along the IC card utilization surface. When the non-contact IC card 200 is not used, the skimming prevention surface is set to the outer surface side as shown in FIG. When the card case 700 is held in a breast pocket or the like and the non-contact IC card 200 is used, the IC card use side is placed on the ticket gate of a transportation facility or ATM of a financial institution as shown in FIG. The card case 700 is held so as to be held over the card reader. According to the second usage mode, a skimming prevention effect is obtained when the non-contact IC card 200 is not used, and an IC card utilization support effect is obtained when the non-contact IC car 200 is used.

  FIG. 19 is a diagram schematically showing a skimming prevention effect and an IC card utilization support effect in the second usage mode. Note that FIG. 19 has a cross section similar to FIG. 16, and the antenna coil 210 is schematically shown as a quadrangle as a cross section of the loop antenna coil. Reference numeral 211 denotes an outer peripheral edge of the antenna coil area, and 212 denotes an inner peripheral edge of the antenna coil area.

FIG. 19A shows the flow of magnetic lines of force radiated from the card reader 300 on the skimming prevention surface side in the second usage mode. In the second usage mode, when the skimming prevention surface is located on the outer surface, the conductive sheet 501 is in a position facing the card reader 300, and the magnetic path FLb radiated from the card reader 300 is a conductive sheet made of a conductive material. Blocked by 501. This phenomenon can be explained by the fact that the magnetic lines of force are absorbed by the conductive material and converted into thermal energy, and the same amount of anti-phase magnetic field lines are induced from the conductive sheet with respect to the incident magnetic lines of force. It can be explained that the magnetic field lines are blocked at the surface of the conductive sheet 501 apparently by canceling each other.
As described above, in the second usage mode of the present invention, even if illegal reading is performed from the skimming prevention surface side by the card reader for skimming, the non-contact IC card 200 cannot be read, and the skimming prevention effect is obtained.

  FIG. 19B shows the flow of magnetic lines of force when the IC card is used over the ticket gate of a transportation facility or an ATM card reader of a financial institution in order to use the non-contact IC card 200 in the second usage mode. Is shown. In the second usage mode, when the IC card is used over the card reader 300, the contactless IC card 200 is in a position facing the card reader 300. As described in the first embodiment, the magnetic sheet 502 is a card. Since the magnetic field lines (FLb) radiated from the reader 300 are drawn and re-radiated, formation of a magnetic path passing through the antenna coil 210 of the non-contact IC card 200 is supported, and the non-contact IC card 200 and the card reader 300 are electromagnetically coupled. To do. As described above, in the second usage mode, when the card reader 300 is held over from the IC card usage side, an IC card usage support effect can be obtained.

(Experiment)
Next, as in the experiment of the first usage mode, the skimming prevention effect and the IC card utilization support effect in the second usage mode are actually tested by using the second IC card access controller of the present invention. confirmed.
In the experiment, the card reader 300 was installed as if it were a card reader. In the card case 700, the second IC card access controller 500 and the non-contact IC card 200 were placed, and the non-contact IC card 200 was placed along the IC card utilization surface.
Gradually approach the card reader 300 by holding the card case 700 so that the skimming prevention surface is on the card reader 300 side (a relationship corresponding to FIG. 19A), and the card reader 300 is connected to the non-contact IC card 200. Hold the card case 700 so that the IC card usage surface is on the card reader 300 side (relationship corresponding to FIG. 19B) and the first measurement for measuring the reaction distance at the time when reading can be performed between the cards. The second measurement was performed to gradually approach the reader 300 and measure the reaction distance when the card reader 300 was able to read from the non-contact IC card 200.

FIG. 20 shows the result of the confirmation experiment in the case of the second usage mode.
As shown on the left side of FIG. 20, the reaction distance on the skimming prevention surface side is 0, that is, the information on the non-contact IC card 200 could not be read even if the card case 700 was brought close to the card reader 300. .
Next, as shown on the right side of FIG. 20, the reaction distance on the IC card utilization surface side was about 50 mm. That is, when the card case 700 is brought close to the card reader 300 within 50 mm, the information of the non-contact IC card 200 can be read.
From the above, it can be confirmed that the second IC card access controller 500 of the present invention has a good skimming prevention effect in a state where the skimming prevention surface is held facing the outer surface in the second usage mode. In order to use the IC card, it was confirmed that a good IC card use support effect can be obtained when the IC card is used from the IC card use side to the card reader.

Next, the third usage mode will be described.
In the third usage mode, one of at least two contactless IC cards is held along the skimming prevention surface, and the other one is held along the IC card use surface, and is placed along the skimming prevention surface side. This is a usage mode in which skimming prevention of the non-contact IC card and control of use support of the non-contact IC card along the IC card use surface side are performed. For example, the non-contact IC card 200A of the financial institution is set along the skimming prevention surface, and the non-contact IC card 200B of the transportation system is set along the IC card use surface. When neither the non-contact IC card 200A nor B is used, the skimming prevention effect can be obtained by holding the card case 700 in a breast pocket or the like so that the skimming prevention surface is on the outer surface side as shown in FIG. It is done. Further, when using the non-contact IC card 200B for transportation, if the card case 700 is held so that the IC card use side is held over the card reader of the transportation ticket gate as shown in FIG. The IC card utilization support effect of the card 200B can be obtained. In this example, when the non-contact IC card 200A is used, the non-contact IC card 200A is taken out from the card case 700 and used.

  FIG. 22 is a diagram schematically showing the skimming prevention effect and the IC card utilization support effect in the third usage mode. Note that FIG. 22 has a transverse cross section, similar to FIG. 16, and the antenna coil 210 is schematically shown as a square as a cross section of the loop-shaped antenna coil. Reference numeral 211 denotes an outer peripheral edge of the antenna coil area, and 212 denotes an inner peripheral edge of the antenna coil area.

FIG. 22A shows a flow of magnetic lines of force radiated from the card reader 300 on the skimming prevention surface side in the third usage mode. The non-contact IC card 200A along the skimming prevention surface is at a position facing the card reader 300. However, as in the case of FIG. 16A of the first usage mode, the non-contact IC card 200A and the card reader 300 are not electromagnetically coupled because the conductive sheet 500 is in close contact behind the non-contact IC card 200A. . Further, the non-contact IC card 200B for transportation located on the IC card utilization surface side is not electromagnetically coupled to the card reader 300 due to the presence of the conductive sheet 501. Thus, in the third usage mode, a good skimming prevention effect can be obtained for both the non-contact IC cards 200A and 200B.
As described above, in the third usage mode of the present invention, even when illegal reading is performed from the skimming prevention surface side by the card reader for skimming, neither of the non-contact IC cards 200A and 200B can be read, and the skimming prevention effect is obtained. can get.

  FIG. 22B shows the flow of magnetic lines of force when the IC card usage surface side is held over a card reader of a ticket gate of a transportation facility in order to use the non-contact IC card 200B in the third usage mode. In the third usage mode, when the IC card is used over the card reader 300, the non-contact IC card 200B is in a position facing the card reader 300. As described in the first embodiment, the magnetic sheet 502 draws the magnetic field lines (FLb) radiated from the card reader 300 and re-radiates it, so that the formation of a magnetic path that passes through the antenna coil 210 of the non-contact IC card 200 is supported. Then, the non-contact IC card 200 and the card reader 300 are electromagnetically coupled. The non-contact IC card 200A along the skimming prevention surface is not electromagnetically coupled to the card reader 300 due to the presence of the conductive sheet 501. As described above, in the third usage mode, when the IC card usage side is held over the card reader 300, an IC card usage support effect is obtained along the IC card usage side.

(Experiment)
Next, similarly to the experiment in the first usage mode, the skimming prevention effect and the IC card utilization support effect in the third usage mode using the third IC card access control body and the card reader of the present invention described above are obtained. Confirmed by experiment.
In the experiment, the card reader 300 was installed as if it were a card reader. In the card case 700, the second IC card access controller 500 and the two non-contact IC cards 200 were placed, one of which was placed along the skimming prevention surface and the other along the IC card utilization surface.
Gradually approach the card reader 300 by holding the card case 700 so that the skimming prevention surface is on the card reader 300 side (a relationship corresponding to FIG. 22A), and the card reader 300 is connected to the non-contact IC card 200A. Hold the card case 700 so that the IC card utilization surface is on the card reader 300 side (relationship corresponding to FIG. 22B) and the first measurement for measuring the reaction distance at the time when reading can be performed between the cards. The second measurement was performed to gradually approach the reader 300 and measure the reaction distance when the card reader 300 was able to read with the non-contact IC card 200B.

FIG. 23 shows the result of the confirmation experiment in the case of the third usage mode.
As shown on the left side of FIG. 23, the reaction distance on the skimming prevention surface side is 0, that is, the information on the non-contact IC card 200A could not be read even if the card case 700 was brought close to the card reader 300. .
Next, as shown on the right side of FIG. 23, the reaction distance on the IC card utilization surface side was about 50 mm. That is, when the card case 700 is brought close to the card reader 300 within 50 mm, the information of the non-contact IC card 200B can be read.
From the above, it can be confirmed that the second IC card access controller 500 of the present invention has a good skimming prevention effect for the non-contact IC card 200A along the skimming prevention surface in the third usage mode. It was confirmed that when the IC card usage side was held over the card reader, the contactless IC card 200B along the IC card usage side and a good IC card usage support effect were obtained.

Next, for comparison with the second IC card access control body 500 of the present invention, another skimming prevention body is manufactured, its skimming prevention performance and card use support performance are measured, and the second IC card of the present invention is measured. It is confirmed by experiment that the skimming prevention performance and the card use support performance of the card access controller 500 are excellent.
First, as a first skimming prevention body, a skimming prevention body 2000 including only a conductive sheet was manufactured.

FIG. 24 is a diagram showing the structure and usage method of the first skimming prevention body 2000. As shown in FIG. 24A, the first skimming prevention body 2000 includes only a conductive sheet 501. In addition, since it is only the electroconductive sheet of a board | substrate, there is no difference in front and back.
As shown in FIG. 24 (b), the usage method is to hold the non-contact IC card 200 along one surface of the first skimming prevention body 2000. In the state of FIG. 24B, the surface along the non-contact IC card is the IC card utilization surface, and the surface opposite to the surface along the non-contact IC card is the skimming prevention surface.

(Experiment)
Using the first skimming prevention body 2000, the skimming prevention effect and the IC card utilization support effect were confirmed by experiments.
In the experiment, the card reader 300 was installed as if it were a card reader. In the card case 700, the first skimming prevention body 2000 and the non-contact IC card 200 are placed. The card was used. Hold the card case 700 so that the skimming prevention surface is on the card reader 300 side, gradually approach the card reader 300, and determine the reaction distance when the card reader 300 can read from the non-contact IC card 200. Gradually approach the card reader 300 by holding the card case 700 so that the IC card utilization surface is on the card reader 300 side and the card reader 300 is in contact with the non-contact IC card 200. A second measurement was performed to measure the reaction distance when reading was possible.

FIG. 25 shows the result of the confirmation experiment of the first interference preventing body 2000.
As shown on the left side of FIG. 25, the reaction distance on the skimming prevention surface side is 0, that is, the information on the non-contact IC card 200 could not be read even if the card case 700 was brought close to the card reader 300. . From the experimental results, it was confirmed that the skimming prevention performance of the first skimming prevention body 2000 assumed from the prior art is extremely good.
Next, as shown on the right side of FIG. 25, the reaction distance on the card use support surface was also 0 mm. Since there is a conductive sheet in close contact behind the non-contact IC card 200, the non-contact IC card 200 and the card reader 300 cannot be electromagnetically coupled well as in the case of FIG.
As described above, it has been confirmed that the first skimming prevention body 2000 that can be assumed from the prior art exhibits the skimming prevention performance but does not ensure the IC card utilization support performance.

Next, as a second skimming prevention body, a skimming prevention body 2100 in which a magnetic sheet was laminated on the entire surface of one surface of a conductive sheet as a substrate was manufactured.
FIG. 26 is a diagram showing the structure and usage method of the second skimming prevention body 2100. As shown in FIG. 26A, the second skimming prevention body 2100 is formed by laminating a magnetic sheet 502 on the entire surface of one surface of a conductive sheet 501 serving as a substrate. The surface on which the magnetic sheet 502 is laminated is an IC card utilization surface, and the surface from which the conductive sheet is exposed is a skimming prevention surface.
The usage method is to hold the non-contact IC card 200 along the IC card utilization surface of the second skimming prevention body 2100 as shown in FIG.

(Experiment)
The skimming prevention effect and the IC card utilization support effect were confirmed by experiment using the card reader 300 used in the experiment of the usage mode of the second skimming prevention body 2100 and the second IC card access control body 500.
In the experiment, the card reader 300 was installed as if it were a card reader. A second anti-skimming body 2100 and a non-contact IC card 200 were put in the card case 700, and the non-contact IC card 200 was placed along the IC card utilization surface side.
Hold the card case 700 so that the skimming prevention surface is on the card reader 300 side, gradually approach the card reader 300, and determine the reaction distance when the card reader 300 can read from the non-contact IC card 200. Gradually approach the card reader 300 by holding the card case 700 so that the IC card utilization surface is on the card reader 300 side and the card reader 300 is in contact with the non-contact IC card 200. A second measurement was performed to measure the reaction distance when reading was possible.

FIG. 27 shows the result of the confirmation experiment of the second interference preventing body 2100.
As shown on the left side of FIG. 27, the reaction distance of the skimming prevention surface is 35 mm, that is, the skimming prevention surface cannot completely prevent skimming, and the card reader 300 can read the information of the non-contact IC card 200. did it. That is, it was confirmed that the second skimming prevention body 2100 does not provide sufficient skimming prevention performance. This numerical value is the same as the numerical value of the upper communication blocking performance of the IC card access control body of the pattern 1 verified in the experiment of Example 1 (FIG. 10), and the reason why the skimming prevention performance is not exhibited is also shown in FIG. 2 (b). This is because the magnetic path FLa is formed.

Next, as shown on the right side of FIG. 27, it was found that the reaction distance of the card usage support surface was 65 mm. The numerical value of this experimental result is also the same as the numerical value of the lower communication performance of the IC card access control body of the pattern 1 verified in the experiment of Example 1 (FIG. 10), and it was confirmed that sufficient communication performance could be secured.
As described above, it was confirmed that the second skimming prevention body 2100 that can be assumed from the prior art exhibits the IC card utilization support performance but does not ensure the skimming prevention performance.

As described above, both the first IC card access control body 2000 and the second IC card access control body 2100 simultaneously exhibit the skimming prevention performance in terms of skimming prevention and the card usage support performance in terms of card usage. It was confirmed that it was not possible.
On the other hand, the second IC card access control body 500 of the present invention has three usage modes, and can provide a remarkable effect that the skimming prevention performance and the card use support performance can be exhibited selectively or simultaneously. confirmed.

The first IC card access control body and the second IC card access control body of the present invention can be sealed by applying a plastic film coating to the whole. It is preferable that the whole is coated with a plastic film and sealed, since the structural strength of the IC card access control body is increased and the problem that the magnetic sheet is peeled off from the conductive sheet does not occur. Furthermore, it is also possible to code the plastic film after sandwiching what is printed on the design of the IC card access control body and necessary descriptions such as product names and explanations.
While the preferred embodiment of the invention has been illustrated and described, it will be appreciated that various changes can be made without departing from the scope of the invention. Therefore, the technical scope of the present invention is limited only by the description of the appended claims.

  The first IC card access controller and the second IC card access controller of the present invention can be applied to a card system using a non-contact IC card. There are various types of businesses that use contactless IC cards, such as transportation ticket gate cards, financial institution cash cards and credit cards, and entrance / exit management cards. The user uses the first IC card access control body or the second IC card access control body of the present invention when the user uses these non-contact IC cards while holding them in the card holder over the card reader. Can do.

The figure which shows the top view and side view of the 1st IC card access control body 100 of this invention typically The figure which showed typically a mode that interference did not occur, when holding two non-contact IC cards over a card reader using the 1st IC card access control body 100 of the present invention. The figure which illustrates typically the positional relationship of the 1st IC card access control body 100 of Example 1 of this invention, and the antenna coil of a non-contact IC card. The figure explaining the inner periphery of an area and the outer periphery of an area where an antenna coil is provided The figure which shows the pattern of the shape of a magnetic sheet The figure explaining the method of reading experiment of a non-contact IC card The figure which shows the result of the communication interruption performance experiment of an upper non-contact IC card, and the communication performance experiment of a lower non-contact IC card The figure which shows the experimental result about how much the outer peripheral edge of a magnetic sheet should be inside from the outer peripheral edge of a conductive sheet The figure which shows typically the shape pattern of the magnetic sheet of the 1st IC card access control body of Example 2. The figure which shows the experimental result using the 1st IC card access control body which has a magnetic sheet of the pattern 5 shown in FIG. The figure which shows typically the top view and side view of a 1st IC card access control body concerning Example 3. FIG. The figure which showed typically a mode that interference did not occur, when holding two non-contact IC cards over a card reader using the 1st IC card access control body 100 concerning Example 3. The figure which shows typically the IC card utilization surface, side surface, and skimming prevention surface of the 2nd IC card access control body 500 of this invention. The figure which showed typically the basic usage aspect of the 2nd IC card access control body 500 The figure which showed typically the relationship between the card reader in a 1st usage mode, a 2nd IC card access control body, and a non-contact IC card. The figure which showed typically the skimming prevention effect in a 1st usage condition. The figure which showed the result of the confirmation experiment of the effect in a 1st usage mode The figure which showed typically the relationship between the card reader in a 2nd use aspect, a 2nd IC card access control body, and a non-contact IC card. The figure which showed typically the skimming prevention effect and IC card utilization support effect in a 2nd usage condition. The figure which showed the result of the confirmation experiment of the effect in a 2nd use aspect The figure which showed typically the relationship between the card reader in a 3rd use aspect, a 2nd IC card access control body, and a non-contact IC card. The figure which showed typically the skimming prevention effect and IC card utilization support effect in a 3rd usage condition. The figure which showed the result of the confirmation experiment of the effect in a 3rd use aspect The figure which shows the structure and usage method of the 1st skimming prevention body 2000. The figure which showed the result of the confirmation experiment of the effect of the 1st skimming prevention body 2000 The figure which shows the structure and usage method of the 2nd skimming prevention body 2100. The figure which showed the result of the confirmation experiment of the effect of the 2nd skimming prevention body 2100 The figure which showed the structure of the conventional interference prevention body

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 1st IC card access control body 101 Conductive sheet 102 Magnetic sheet 103 Nonconductive material 200a, 200b Non-contact IC card 210a, 210b Antenna coil 211 Outer periphery of antenna coil area 212 Inner periphery of antenna coil area 300 Card reader 500 First 2 IC card access control body 501 Conductive sheet 502 Magnetic sheet 700 Card case

Claims (6)

Both are separated between two non-contact IC cards, and only a non-contact IC card located on the card reader side is electromagnetically coupled to an oscillating magnetic field of a predetermined frequency radiated by the card reader, An IC card access control body that prevents interference by preventing electromagnetic coupling of a non-contact IC card located on the side opposite to the card reader side,
A conductive sheet as a substrate;
Comprising a magnetic sheet laminated on the front side and the back side of the conductive sheet,
An IC card access control body characterized in that the shape of the magnetic sheet is smaller than the shape of the conductive sheet without laminating the magnetic sheet on the outer periphery of the conductive sheet. Both are separated between two non-contact IC cards, and only a non-contact IC card located on the card reader side is electromagnetically coupled to an oscillating magnetic field of a predetermined frequency radiated by the card reader, An IC card access control body that prevents interference by preventing electromagnetic coupling of a non-contact IC card located on the side opposite to the card reader side,
A conductive sheet as a substrate;
Comprising a magnetic sheet laminated on the front side and the back side of the conductive sheet,
The shape of the magnetic sheet is made smaller than the shape of the conductive sheet without laminating the magnetic sheet on the outer peripheral portion of the conductive sheet, and the conductive sheet on the outer peripheral portion of the magnetic sheet An IC card access control body comprising a band made of a non-conductive material provided thereon. One side of the board is used as a skimming prevention surface, the other side is used as an IC card use surface, and a non-contact IC card is held along either the skimming prevention surface or the IC card use surface. Or holding two non-contact IC cards along each of the skimming prevention surface and the IC card use surface, and controlling the non-contact IC card skimming prevention and use support A control body,
A conductive sheet to be the substrate;
A magnetic sheet laminated on the IC card utilization surface of the conductive sheet,
An IC card access control body characterized in that the shape of the magnetic sheet is smaller than the shape of the conductive sheet without laminating the magnetic sheet on the outer periphery of the conductive sheet. One surface of the substrate is used as a skimming prevention surface, the other surface is used as an IC card use surface, and one non-contact IC card is either one of the skimming prevention surface or the IC card use surface or two non-use surfaces. An IC card access control body that holds a contact IC card along each of the skimming prevention surface and the IC card use surface, and controls skimming prevention and use support of the non-contact IC card,
A conductive sheet to be the substrate;
A magnetic sheet laminated on the IC card utilization surface of the conductive sheet,
The shape of the magnetic sheet is made smaller than the shape of the conductive sheet without laminating the magnetic sheet on the outer peripheral portion of the conductive sheet, and the conductive sheet on the outer peripheral portion of the magnetic sheet An IC card access control body comprising a band made of a non-conductive material provided thereon. The non-contact IC card contains an antenna coil,
In a state where the non-contact IC card and the IC card access control body are overlapped, the outer peripheral edge of the conductive sheet is located outside the outer peripheral edge of the area where the antenna coil is provided, and the outer peripheral edge of the magnetic sheet 5. The IC card access control body according to claim 1, wherein the IC card access control body is located inside an outer peripheral edge of the conductive sheet and outside an inner peripheral edge of the area where the antenna coil is provided. . The IC card access control body according to any one of claims 1 to 5, wherein an outer surface is covered with a plastic resin and molded into a plastic card shape.

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