JPH10105663A - Wrong use preventing device for ic card - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wrong use preventing device which allows a user to use an IC card at the time of user's normal use of the IC card and quickly inhibits the use of the IC card at the time when the IC card has been lost or stolen. SOLUTION: The wrong use preventing device for an IC card 10 consists of the IC card 10 and a transmitter 20 which transmits a radio signal to the IC card 10. The IC card 10 is provided with a reception part 15, which receives the radio signal from the transmitter 20, and storage parts 12 and 13 where data to discriminate the owner is stored, and data stored in storage parts 12 and 13 is erased or is made unavailable if a prescribed radio signal from the transmitter 20 cannot be received for a prescribed time by the reception part 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention specifies an owner such as an electronic money card, a credit card, a cash card, a regular ticket, a time card at the time of leaving or leaving, and a card for opening and closing doors in places where entry is confidentially restricted. IC used as
The present invention relates to a device for preventing unauthorized use of a card.

[0002]

2. Description of the Related Art Conventionally, this type of IC card has a problem in that specific data remains semi-permanently, so that it is misused by anyone other than the authorized owner. In order to solve this problem, there has been proposed an IC card in which a timer mechanism is provided in the IC card and an initial timer value is counted up to erase memory data in the IC card (particularly). JP-A-62-287388). According to such an IC card, even if the IC card is lost and passed to a person other than the authorized owner, there is less fear of misuse.

[0003]

However, the IC card which erases data after a predetermined time elapses as described above has a limited period of use even for an authorized owner. If the period is set to be too short, there is a great restriction on the user, and the IC card may not be used when required. On the other hand, if the period until data erasure is set to a long time, the risk of unauthorized use in the event of loss or theft increases, and the meaning of data erasure decreases.

[0004] Therefore, the present invention provides a device for preventing unauthorized use of an IC card, which can be used as it is when the user uses the IC card properly, and which cannot be used immediately when the IC card is lost or stolen. The purpose is to provide.

[0005]

According to a first aspect of the present invention, there is provided a device for preventing unauthorized use of an IC card comprising an IC card, a transmitter for transmitting a radio signal to the IC card, and a device for preventing unauthorized use of an IC card. And the IC card includes
A receiving unit that receives a wireless signal from the transmitter, and a storage unit that stores data for identifying an owner, when the receiving unit cannot receive a predetermined wireless signal from the transmitter for a predetermined time Preferably, the data stored in the storage unit is deleted or unusable.

According to a second aspect of the present invention, there is provided a device for preventing unauthorized use of an IC card, comprising an IC card, a transmitter for transmitting a radio signal to the IC card, and a device for preventing unauthorized use of an IC card. The card includes a transmitting unit that transmits a wireless signal to the transmitter, a receiving unit that receives a wireless signal from the transmitter, and a storage unit that stores data for identifying an owner, The transmitter has the I
A transmitting unit for transmitting a radio signal to the C card;
A receiving unit for receiving a wireless signal from the C card; and a storage unit for storing data for identifying the owner or the IC card, wherein a predetermined wireless signal is transmitted between the transmitter and the IC card for a predetermined time. When data cannot be transmitted / received, the data stored in the respective storage units of the IC card and the transmitter are erased or made unusable.

According to a third aspect of the present invention, there is provided an IC card unauthorized use preventing apparatus according to the first or second aspect, wherein the transmitter includes an owner or an IC card. An input means for setting data for identification is provided, and the input data can be transmitted to and stored in the storage unit of the IC card by the transmitter.

According to a fourth aspect of the present invention, there is provided the IC card according to the first aspect of the present invention, wherein the first storage unit stores data such as a cash balance; the second storage unit stores data for identifying an owner; A data processing unit that performs arithmetic processing based on data stored in the first storage unit or data from an external information processing device; a receiving unit that receives a wireless signal from a transmitter; A use stop unit for erasing or disabling the data stored in the second storage unit when a predetermined radio signal from the device cannot be received for a predetermined time.

According to a fifth aspect of the present invention, there is provided the IC card according to the fourth aspect, wherein the use stopping unit comprises:
A timer unit that counts a timer value, outputs a signal that erases or disables data in the second storage unit when the timer value is counted a predetermined time, and the timer unit that receives a predetermined wireless signal in the receiving unit. A reset unit for initializing a timer value of the unit.

According to a sixth aspect of the present invention, there is provided a transmitter for transmitting a radio signal to an IC card at predetermined intervals;
And a power supply unit for supplying power to the transmission unit.

According to a seventh aspect of the present invention, there is provided a transmitter for storing data for identifying an owner or an IC card, and transmitting the data stored in the storage unit to the IC card at predetermined intervals. And a power supply unit for supplying power to the storage unit and the transmission unit.

According to another aspect of the present invention, there is provided a transmitter for transmitting a radio signal to an IC card, a receiver for receiving a radio signal from the IC card, an owner or I / O.
A storage unit for storing data for identifying the C card, wherein when the reception unit cannot receive a predetermined radio signal from the IC card for a predetermined time, the data stored in the storage unit is deleted or unusable. It is characterized in that it is possible.

According to a ninth aspect of the present invention, in the transmitter according to the seventh or eighth aspect, the owner or the IC is provided.
Input means for setting data for identifying a card is provided, and the input data can be transmitted to and stored in a storage unit of the IC card.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION The device for preventing unauthorized use of an IC card according to the present invention comprises an IC card and a transmitter for transmitting a radio signal to the IC card. Here, the transmitter is portable and portable and has a size and weight that can be put in a bag, attached to a belt, or hung from a neck. Furthermore, it is more desirable that the accessory pendant, brooch, bracelet and the like be used together.
In addition, the wireless function of the transmitter is of a level that reaches the IC card when a person carries the IC card at the same time, for example, within one meter or several meters. Moreover,
It is preferable that the radio wave of the transmitter does not have directivity.

The IC card unauthorized use prevention device according to the first embodiment of the present invention stores a receiving unit for receiving a radio signal from a transmitter and data for identifying an owner in the IC card. A storage unit for erasing or making the data stored in the storage unit unusable when the reception unit cannot receive a predetermined radio signal from the transmitter for a predetermined time. Here, the data for identifying the owner is
In addition to data for specifying the owner, data such as a password for determining whether the owner is the correct owner may be used. Since the IC card includes the receiving unit and the storage unit, it is preferable that the IC card has a power supply unit such as a battery for making these function. However, even if it does not necessarily have a power supply unit inside, it is also possible to configure so as to transmit the power together from the transmitter. Also,
The radio signal received by the receiving unit is preferably an individual signal set for each IC card in advance in terms of security, but it is a signal applicable to a plurality of types of cards owned by one person. The inconvenience of having one transmitter for each IC card can also be eliminated. At this time, as an individual signal set for each IC card, data for specifying the owner set on the IC card or data such as a password for determining whether or not the owner is correct is used. You can also. Furthermore, by making the signal versatile irrespective of the owner of the IC card, the security is reduced, but the inconvenience when the transmitter is lost or forgotten can be reduced. Further, the case where a predetermined radio signal cannot be received includes not only a signal of a level that cannot be received but also a case where the signal is not subjected to internal processing because the data is not predetermined data set in advance.

The predetermined time is usually a predetermined time set in advance, and it is preferably practically about 30 minutes. However, security is reduced by shortening the set time to 10 minutes or several minutes. Will be higher. In particular, by allowing the user to change the setting, for example, by carrying out the setting according to the method of carrying the transmitter and the IC card, the state of the balance of the IC card, etc., the security and convenience as required are improved. Can be. It is preferable that such a setting change can be performed on the transmitter side. Here, the predetermined time is not necessarily limited to a fixed time, and may vary according to the level of a radio wave from the transmitter or the like. As described above, according to the present invention, when a radio signal from a transmitter cannot be received for a predetermined time, the data stored in the storage unit is erased or made unusable, so that the IC card is dropped or stolen. Can prevent unauthorized use by others.

In the IC card unauthorized use preventing device according to the second embodiment of the present invention, the IC card has a transmitting section for transmitting a radio signal to the transmitter and a radio signal from the transmitter. A transmitter for transmitting a radio signal to the IC card; and a receiver for receiving a radio signal from the IC card. And a storage unit for storing data for identifying the owner or the IC card. When a predetermined wireless signal cannot be transmitted and received between the transmitter and the IC card for a predetermined time, the IC card and the transmitter are The data stored in each storage unit is erased or unusable. The difference from the first embodiment is that the IC
The card also has a transmission function so that transmission and reception can be performed between the IC card and the transmitter, and the transmitter has a storage unit for storing data for identifying the owner or the IC card. Is a point. Descriptions of operations and the like resulting from the same functions as in the first embodiment are omitted. First,
By providing the transmitter with data for identifying the owner or the IC card as in this embodiment, the data can be used to make the data of the wireless signal unique, and the security can be improved. Can be increased. Further, by exchanging signals in both directions between the IC card and the transmitter, the security can be further enhanced. Also, the data on the transmitter side is deleted according to the signal state from the IC card, so that the security can be further enhanced.

The IC card unauthorized use prevention device of the present invention according to the third embodiment is provided with input means for setting data for identifying the owner or the IC card in the transmitter, and The input data can be transmitted to and stored in the storage unit of the IC card. The device for preventing unauthorized use of an IC card according to the present invention in the first or second embodiment cannot be used after the data in the storage section is erased. Even if a legitimate user possesses the data, the transmitter and the IC card may be stored separately so that the data may be erased or unusable. This embodiment makes it possible to return to a usable state again in such a case. Here, the input means to be provided in the transmitter is
In addition to the input means independently having a key input unit capable of inputting data, it also includes an input terminal which can be connected to another device having a key input unit. If it has its own key input unit, it has the convenience of easily inputting data even when going out, but the input terminal is excellent in terms of reducing the size and weight of the transmitter. Note that, as in the present embodiment, the erased data can be easily reset, so that, for example, at the time of storage such as at night, the IC card and the transmitter are stored separately from each other, and the IC card is stored separately. Alternatively, data for identifying the owner or the IC card can be erased from the transmitter, and the security at the time of theft can be increased.

The present invention in the fourth and fifth embodiments relates to the configuration of an IC card itself having an unauthorized use prevention function. The IC card according to the fourth embodiment includes a first storage unit that stores data such as a cash balance, a second storage unit that stores data for identifying an owner, and a first storage unit. A data processing unit that performs arithmetic processing based on data stored in the or data from an external information processing device, and a receiving unit that receives a wireless signal from a transmitter,
The receiving unit includes a use stop unit that deletes or disables the data stored in the second storage unit when a predetermined wireless signal from the transmitter cannot be received for a predetermined time.
As in the present embodiment, the storage unit is divided into two parts, and the data to be erased for theft prevention is used as the second storage unit for storing data for identifying the owner. After that, by resetting this data, the IC card can be used continuously. Here, as a method of erasing data in the use stop unit, a timer unit counts a timer value as described below, and an initial timer value is counted to obtain an erase signal. The data is held by repeating new writing to the second storage unit, and if the writing is interrupted for a predetermined time, the data is erased or unusable. There is a method of erasing or making data unusable when supply of data is interrupted for a predetermined time.

More specifically, the IC card according to the fifth embodiment of the present invention is configured such that the use stop unit counts a timer value, and erases or uses the data in the second storage unit when the timer value is counted a predetermined time. This is characterized in that it comprises a timer unit that outputs a signal indicating that it is impossible, and a reset unit that initializes the timer value of the timer unit when a predetermined wireless signal is received by the receiving unit. Here, the signal for data erasure output from the timer unit may be output to the second storage unit via the data processing unit, or may be supplied to the second storage unit without passing through the data processing unit. May be output to a switch unit that can be disconnected.

The present invention according to the sixth to ninth embodiments relates to the configuration of a transmitter which fulfills an unauthorized use preventing function. The transmitter according to the present invention in the sixth embodiment includes a transmission unit that transmits a radio signal to an IC card at a predetermined interval, and a power supply unit that supplies power to the transmission unit. Here, the predetermined interval means a predetermined time interval, but may be a continuous output. By setting the transmission interval to be short, the status of the IC card can be precisely managed and the security can be enhanced. On the other hand, by setting the transmission interval to be long, the power consumption of the transmitter can be reduced.

The transmitter according to the present invention in the seventh embodiment further has a storage unit for storing data for identifying the owner or the IC card, and for the IC card, the storage unit stores the data. This is for transmitting data. Thus, security can be further enhanced by transmitting specific data from the transmitter.

The transmitter according to the eighth embodiment of the present invention further comprises the step of erasing or disabling the data stored in the storage unit when the reception unit cannot receive a predetermined radio signal from the IC card for a predetermined time. It is assumed that. In this way, by erasing the data in the transmitter based on the signal state from the IC card, it is possible to prevent a third party from abusing.

The transmitter according to the ninth embodiment of the present invention is provided with an input means for setting data for identifying an owner or an IC card, and transmits the input data to the I / O card.
It can be transmitted to and stored in the storage section of the C card. The present embodiment makes it possible to return to a usable state when data in the storage unit of the IC card is deleted. Note that, as described in the third embodiment, the input means provided in the transmitter is not only an input means having a key input section for independently inputting data, but also another device having a key input section. Input terminals that can be connected to

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which an IC card unauthorized use prevention device according to the present invention is applied to an electronic money card will be described below with reference to the drawings. FIG. 1 is a block diagram showing a device for preventing unauthorized use of the IC card by means of function realizing means.
The device comprises an IC card 10 and a transmitter 2 as shown in the figure.
0. The IC card 10 includes a data processing unit 11 including a microprocessor, first and second electrically rewritable storage units 12 and 13, a use stop unit 14 for erasing data in the second storage unit, and an external device. Receiving section 15 for receiving the wireless signals of the above, a power supply section 16 for supplying power to them, and a display section 1 for displaying the status of the card
7 are provided. The data processing unit 11 performs processing based on the data stored in the first and second storage units 12 and 13 and data from an external information processing device, and checks whether the data received by the reception unit 15 is correct. Whether or not, the received data is stored in the second storage unit 13, and the data in the second storage unit 13 is deleted. The data processing unit 11 has a terminal 11a for electrically connecting to an external information processing device. First storage unit 12
Stores a part of the owner identification data and the personal identification number data, in addition to the data relating to the original purpose of use of the card, such as the cash balance and the place of use. Further, the second storage unit 13 stores a part of the owner identification data. In the present embodiment, for example, if the personal identification data is “ABCDE” consisting of five digits and the personal identification number data is “FG”, the first storage unit 12 stores “AXXDE” as a part of the personal identification data. And the password number data “FG”, and the second storage unit 13 stores
“XBCXE” is stored as part of the personal identification data. The use suspending unit 14 counts a timer value, and outputs a signal for erasing data stored in the second storage unit 13 when the timer value counts a predetermined value.
And a reset unit 19 for setting the timer value to an initial value by a signal from the receiving unit 15. Power supply unit 16
Are the data processing unit 11, the first and second storage units 12, 1
3. It supplies power to the use stop unit 14 and the receiving unit 15, and is composed of a secondary battery, and is supplied with power by transmission from the transmitter 20. Display 1
7 is lit when the IC card 10 is in use,
It blinks when a predetermined signal from the transmitter 20 is normally received, and turns off when the signal is unusable.

On the other hand, the transmitter 20 is provided with an input unit 21 for inputting user-specific data for identifying the user, a storage unit 22 for storing the input data, and the stored data and power at predetermined intervals. It has a transmission unit 23 for transmitting to the IC card 10, these input means 21, a storage unit 22, a power supply unit 24 for supplying power to the transmission unit 23, and a display unit 25 for displaying the status of the transmitter. ing. The display method of the display unit 25 is the same as that of the IC card 10. Here, the input means does not necessarily need to have an input key or the like, and may be a connection terminal that can be connected to an external device having the input key or the like.

Next, the use state of the device for preventing unauthorized use of an IC card according to the present embodiment will be described. First, this IC
The case where the card 10 is used will be described. This IC
The card is electrically connected to an external information processing device to exchange data. Normal data transfer is performed by inserting an IC card into a predetermined insertion slot of an external information processing device and connecting the terminal 11a of the data processing unit 11, but by a non-contact type method using a radio signal. In some cases. In data transfer, in an information processing apparatus capable of performing personal identification by key input or the like, first, a personal identification number or the like is input by key to confirm whether or not the owner of the IC card 10 is held. In this embodiment, since the personal identification number data is stored in the first storage unit 12, the personal identification number can be confirmed even in an external information processing apparatus not connected to the host computer. When it is necessary to confirm the owner, the first and second storage units 12 and 1 of the IC card 10 are used.
The data for owner identification stored in each of the storage devices 3 is read to identify the owner. Here, when an external information processing device connected to the host computer is used, the first and second storage units 12 and 13 of the IC card 10 are used.
It is preferable to transmit the data for owner identification stored in each of them as it is, and to make a judgment by performing synthesis processing in the host computer. Further, when the external processing device not connected to the host computer needs to identify itself, it is preferable that the data processing unit 11 performs the synthesizing process. Thereafter, the IC card is used based on the data stored in the second storage unit 12 or data from the outside according to the purpose of use of the card. In addition, the balance calculation and the like can be appropriately performed by the data processing unit 11, and the result is stored in the first storage unit 12. The method of using the IC card 10 as described above differs depending on the type of the IC card, and is not limited by the method of use.

Next, a case where the IC card unauthorized use prevention device according to the present embodiment is carried will be described. Usually IC
The card 10 is carried in a wallet or a regular purse, and the transmitter is carried in a bag or handbag, or attached to a belt, or carried as a bracelet. Although the portable method is not particularly limited,
It is necessary that the C card 10 and the transmitter 20 be carried within a certain distance. When the IC card 10 and the transmitter 20 are both carried as described above, the transmitter 20 transmits a radio signal at predetermined intervals. Then, the IC card 10 periodically receives the signal from the transmitter 20 at the receiving unit 15 unless the receiving state is particularly bad. As described above, when the signal from the transmitter 20 is periodically received, the IC card 10 remains usable.

The flow of the internal processing of the IC card 10 holding such a usable state will be described with reference to FIG. First, the receiving unit 15 outputs the password data “F
G "(step S01). The received password data “FG” is sent to the data processing unit 11, and the data processing unit 11 determines whether or not the password data “FG” matches the password data “FG” stored in the first storage unit 12. A determination is made (step S02). When the data processing unit 11 determines that the password data match, the reset unit 1
Then, a signal is sent to 9 (step S03). Upon receiving this signal, the reset unit 19 outputs a signal for initializing the timer count to the timer unit 18 (Step S04). As described above, as long as the predetermined signal is received by the receiving unit 15, the signal is periodically sent to the reset unit 19, so that the count value of the timer unit 18 is continuously reset before the predetermined count. Therefore, the use stop unit 14
Does not output a signal for erasing data to the second storage unit 13, and the data stored in the second storage unit 13 is retained. A case where the IC card 10 is dropped will be described. If the IC card 10 is dropped and the person carrying the transmitter 20 moves away from the IC card 10, the radio signal from the transmitter 20 will not reach the IC card 10. Therefore, since the IC card 10 cannot receive the signal from the transmitter 20, no signal is sent to the reset unit 19. Since a reset signal is not sent from the reset unit 19 to the timer unit 18, the timer unit 1
At 8, the timer value continues to be counted. When the timer value has counted a predetermined time, a signal for erasing data is output from the use suspending unit 14 to the second storage unit 13, and the data in the second storage unit 13 is erased. As described above, in a state in which the data in the second storage unit 13 is deleted, a part of the data for identifying the user is erased, and the user cannot be identified, so that a third party cannot use the IC card. Can not.

Next, the IC that has become unusable as described above
FIG. 3 shows a method of returning the card 10 to a reusable state.
It will be described based on. First, data [ABCDE] for identifying the owner is input by the input means 21 of the transmitter 20.
Is input (step S21). At this time, the password number data “FG” may also be input. The input data “ABCDE” is temporarily stored in the storage unit 22. When password data is not input, it is assumed that the password is stored in the storage unit 22 in advance. The data stored in the storage unit 22 is transmitted to the transmission unit 23
Is transmitted from the transmitting unit 23, data "ABCDE" for identifying the owner and personal identification number data "FG" are transmitted (step S23). In the IC card 10,
After these data are received by the receiving unit 15, the data is output to the data processing unit 11 (step S12).
The data processing unit 11 first determines whether or not the personal identification number data “FG” stored in the first storage unit 12 matches the transmitted personal identification number data “FG” (step S12). If they match, then it is determined whether or not the data “AXXDE” for owner identification stored in the first storage unit 12 and the transmitted data “ABCDE” correspond (step S13). ). Here, the fifth digit [A], the second digit “D”, and the first digit “E” are confirmed.
If the numbers in the respective digits match, a part of the data for identifying the owner is stored in the second storage unit 13 (step S14). Here, in the second storage unit 13,
“XBCXE” is stored. Which digit is to be stored can be processed by the data processing unit 11 using the result of comparison with the first storage unit 12 or by restricting writing to the second storage unit 13. is there. After the data is stored in the second storage unit 13 as described above, a signal is output from the data processing unit 11 to the use stop unit 14 to operate the timer unit 18 (step S15). As described above, the data for identifying the owner is stored in the first and second storage units 12,
13 so that the IC card 10
When the data of the owner identification is stored in the storage device, it is possible to prevent the use of the card with the identification data of the other person by mistake or intentionally storing the data of the other person. That is, when the data input from the input unit 21 is different from the original data, the data is not stored in the second storage unit 13.
In addition, although the personal identification number data is stored in the first storage unit 12, if the personal identification number data is lost or stolen, the data in the second storage unit 13 has been deleted. Can be prevented.

Note that the present invention is not limited to the above-described embodiment, and a transmitter is provided in the IC card 10, a receiver is provided in the transmitter, and the configuration described in the embodiment is partially applied. You can also. In the above description, one IC card and one transmitter have been described, but the inconvenience of having a plurality of transmitters can be eliminated by associating a plurality of IC cards with one transmitter. it can. In such a case, in the case of the above embodiment, it can be realized by making the password data of each IC card the same. If the password data of the IC card is different, a plurality of password data may be constantly transmitted from the transmitter. In the above description, the security code data is described. However, the security code data is not necessarily limited to the data set in the host computer, and may be determined only between the IC card and the transmitter. It may be freely changeable by the owner. In addition, the security of the transmitter is further enhanced by providing a switch for erasing internal data. If the switch is used to transmit a data erasure signal to the IC card, the effect can be exerted against theft in an emergency.

[0032]

As described above, the present invention can be used as it is when the user uses it properly,
If a card is lost or stolen, it can be immediately disabled. In addition, an IC card that can no longer be used can be made reusable by using a transmitter or the like, so that security can be further improved and usability can be improved. can do.

[Brief description of the drawings]

FIG. 1 is a block diagram of a device for preventing unauthorized use of an IC card according to an embodiment of the present invention;

FIG. 2 is a flowchart showing an internal processing flow of an IC card constituting the apparatus.

FIG. 3 is a flowchart showing a processing flow when the IC card is returned to a reusable state in the apparatus.

[Explanation of symbols]

 Reference Signs List 10 IC card 11 Data processing unit 12 First storage unit 13 Second storage unit 14 Use stop unit 15 Receiving unit 16 Power supply unit 18 Timer unit 19 Reset unit 20 Transmitter 21 Input unit 22 Storage unit 23 Transmission unit

Claims (9)

[Claims] An IC card and a transmitter for transmitting a radio signal to the IC card constitute a device for preventing unauthorized use of the IC card, and the IC card receives a radio signal from the transmitter. And a storage unit for storing data for identifying an owner, and when the receiving unit cannot receive a predetermined radio signal from the transmitter for a predetermined time, the data stored in the storage unit is deleted. A device for preventing unauthorized use of an IC card, wherein the device is made unusable. 2. An IC card and a transmitter for transmitting a radio signal to the IC card constitute an IC card unauthorized use prevention device, and the IC card transmits a radio signal to the transmitter. A transmitting unit, a receiving unit that receives a radio signal from the transmitter, and a storage unit that stores data for identifying an owner, wherein the transmitter includes the IC
A transmission unit for transmitting a radio signal to a card, and the IC
A receiving unit for receiving a wireless signal from the card, and a storage unit for storing data for identifying the owner or the IC card, and a wireless signal for a predetermined time between the transmitter and the IC card. An apparatus for preventing unauthorized use of an IC card, wherein data stored in the respective storage sections of the IC card and the transmitter are erased or unusable when transmission and reception are not possible. 3. The transmitter is provided with input means for setting data for identifying an owner or an IC card, and the transmitter transmits the input data to the I / O card.
3. The method according to claim 1, wherein the data can be transmitted to and stored in a storage unit of the C card.
Device to prevent unauthorized use of C card. 4. A first storage unit for storing data such as a cash balance, a second storage unit for storing data for identifying an owner, and data stored in the first storage unit. And a data processing unit that performs arithmetic processing based on data from an external information processing device, a receiving unit that receives a wireless signal from a transmitter, and a receiving unit that receives a predetermined wireless signal from the transmitter for a predetermined time. An IC card comprising: a use suspending unit that erases or disables use of data stored in the second storage unit when reception is not possible. 5. The use stop unit counts a timer value, and when a predetermined count of the timer value is performed, outputs a signal for erasing or disabling data in the second storage unit, and the receiving unit 5. The IC card according to claim 4, further comprising: a reset unit configured to initialize a timer value of the timer unit when a predetermined wireless signal is received. 6. A transmitter, comprising: a transmitter for transmitting a radio signal to an IC card at predetermined intervals; and a power supply for supplying power to the transmitter. 7. A storage unit for storing data for identifying an owner or an IC card, a transmission unit for transmitting data stored in the storage unit to the IC card at predetermined intervals,
A transmitter comprising: a power supply unit that supplies power to the storage unit and the transmission unit. 8. A transmitting unit for transmitting a wireless signal to an IC card, a receiving unit for receiving a wireless signal from the IC card, and a storing unit for storing data for identifying an owner or the IC card. A transmitter that erases or disables the data stored in the storage unit when the reception unit cannot receive a predetermined wireless signal from the IC card for a predetermined time. 9. An input means for setting data for identifying an owner or an IC card, and the input data can be transmitted to and stored in a storage unit of the IC card. The transmitter according to claim 7 or 8, wherein: