JP2002175512A - Pair ic card - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it difficult to abuse a lost or stolen IC card and to follow a procedure for reissuing an IC card in a short time anywhere. SOLUTION: In a memory 22 of an IC card A of a pair of cards, the ID number 22c of the card A is written and the ID number 220 of the opposite IC card B is written in a specific address of a pair card discrimination memory area 22a. In a memory 24 of the IC cad B, the ID number 24c of the card B is written and the ID number 240 of the opposite IC card A is written in a specific address of a pair card decision memory area 24a. Consequently, it can easily be confirmed that the two IC cards are paired only by comparing the ID numbers in a crossing way as shown by arrows E and F.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paired IC card, and more particularly, to a paired IC card which can be used only when a first IC card and a second IC card are used in pairs. It relates to an IC card.

[0002]

2. Description of the Related Art Conventionally, a card on which a certain amount of data is written is carried around, and the data is read from the card by using a card reader / writer, so that the card can be used as various information cards or identification cards, or a new card can be used. It is used in various fields by using a data update type card on which data can be written. This type of card includes magnetic cards used for prepaid cards and credits, and recently, the amount of information that can be read and written is large,
IC cards with excellent security performance have been put into practical use, and their use has been expanding to various credit cards, telephone cards, expressway toll tickets, commuter passes and train tickets, and the like.

[0003]

However, in such a conventional IC card, the security performance against forgery and the like is improved as compared with a magnetic card such as a prepaid card or a credit card. There is a problem that there is no way to prevent this from being lost or stolen and misused. Also,
If the IC card is lost or stolen, the procedure for reissuing the IC card will be taken, but at that time, the card will be disabled and based on the information registered in the center host computer etc. Had to be reissued. However, complicated procedures such as inquiring the card information to the center online and deleting the previous card information are necessary, so the place where reissue procedures can be performed is limited, and there is a problem that it takes time to reissue. . The present invention has been made in view of the above circumstances, and is difficult to be misused for loss or theft of an IC card, and a paired IC card which can be reissued in a short time without being limited to a place. It is intended to provide.

[0004]

According to the first aspect of the present invention, an IC card can be used for the first time by using a first IC card and a second IC card in a pair. A paired IC card, wherein the first IC
The card has at least its own ID number and the ID number of the second IC card written therein.
In the IC card, at least the ID number of the user and the ID number of the first IC card are written.
When the C card is used, the ID numbers of the counterparts held by the first and second IC cards are compared with their own ID numbers to be matched with each other. Use is permitted as a pair card. According to this, the first IC card has at least its own ID number and the ID of the second IC card.
The D number is written, and at least the own ID number and the ID number of the first IC card are written in the second IC card. When using an IC card, the first IC
ID number of the other party's IC card that the card and the second IC card have, and their own ID that should match this
The number is checked and if they match each other, it is recognized as a formal pair card and the use is permitted. For this reason,
Even if one of the two IC cards is lost or stolen, it cannot be used with only one IC card, so that misuse can be prevented. Also, one IC picked up or stolen
Even if an attempt is made to create a paired card from a card, simply duplicating the card data does not result in a paired card, so that it also has a forgery prevention effect. Further, when one of the two pair cards is lost or stolen, and the reissue procedure is performed from the remaining one IC card, information necessary to create a pair card in the remaining IC card Since everything is included, there is no need to contact the center etc. for card information online.
If there is only a card reader / writer, the place where the reissue procedure can be performed is not limited, and the reissue can be performed in a short time.

According to a second aspect of the present invention, in the paired IC card according to the first aspect, the first and second IC cards are provided with a paired card discriminating memory area for storing the ID number of the other party. The ID number of the other party is written at a predetermined address in the pair card determination memory area. According to this, the first and second IC cards are provided with a pair card discrimination memory area for storing the ID number of the other party, and the ID number of the other party is determined in advance in the pair card discrimination memory area. The address is written. For this reason, a person who does not know the predetermined address cannot know which ID number is the ID number of the other party's IC card, so that a person cannot create a pair card and can surely prevent forgery. . According to a third aspect of the present invention, in the paired IC card according to the first or second aspect, the first and second IC cards each include password data for performing identity verification separately from the ID number. It is characterized by being written. According to this, password data for confirming the identity is written in the first and second IC cards separately from the ID numbers of the cards. For this reason,
If one of the two pair cards is lost or stolen, and the person who picked up or stolen applies for the reissue procedure first and tries to create a pair card, check the password at the reissue window and confirm the identity Therefore, an unauthorized reissue procedure can be prevented. According to a fourth aspect of the present invention, there is provided a paired IC according to any one of the first to third aspects.
In the card, at least a part of the data written in the first and second IC cards is data encrypted using a predetermined encryption key. According to this, data written in the first and second IC cards, for example, in the case of a commuter pass such as a train, a use section, a route, a use period, a user name, gender,
If at least a part of the card data such as age, ID number data of the user and the other party, or at least a part of the password data is encrypted using a predetermined encryption key, a person who does not have the encryption key Since it is almost impossible to decode the data content, an IC card with higher security performance can be provided.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. Pair IC of the present embodiment
The card will be described by taking, as an example, a boarding card in which a commuter pass or a train ticket such as a train is converted into an IC card, but any card that can be converted into an IC card can be applied. It is. FIG. 1 is a schematic perspective view of a paired IC card according to the present embodiment. The paired IC card 10 shown in FIG. 1 is an IC as a first IC card.
A card A12 and an IC card B14 as a second IC card, and the IC card A12 and the IC card B1
The use of the IC card becomes possible only by using the pair 4 and 2 in pairs. In the IC card A12, a memory for holding card data and the like, and an MPU (microprocessor unit) for performing data rewrite processing and the like
The IC chip 12a provided with a control unit such as the above is built in. Similarly, the IC card B14 has a built-in IC chip 14a.

FIG. 2 is a view for explaining data contents recorded in memories in IC chips incorporated in the IC cards A and B of FIG. A characteristic configuration of the present embodiment is that, as shown in FIG.
In the memory 22 of the card A, the ID number 22c of the card A, which is its own ID number, and the pair card discrimination memory area 2
The ID number 220 of the other IC card B is written at a predetermined address of 2a, and the ID number 24c of the card B, which is its own ID number, and the paired card are stored in the memory 24 of the IC card B. At a predetermined address of the discrimination memory area 24a, the ID number 240 of the other IC card A is written. As described above, since the ID number of the pair partner is written at a predetermined address in the memory together with the own ID number, it is only necessary to collate the ID numbers in a cross shape as shown by arrows E and F in FIG. It can be easily confirmed that the two IC cards are pair cards. Also, since the IC card A and the IC card B of the pair card 10 have different ID number positions written in the memory, if one IC card is lost or stolen, the other Even if the contents of the memory are copied as they are, it is not possible to create a partner IC card, so that there is an effect of preventing forgery. Further, in the present embodiment, since the ID number of the other IC card is written in any address in the pair card discrimination memory areas 22a and 24a, it is assumed that a person who does not know the address in advance has viewed the data contents. However, there is an advantage that the other party's ID number cannot be found, and even if the data structure is known, the other party's pair card cannot be forged.

Further, in the present embodiment, a predetermined address in the pair card discrimination memory area 22a, 24a is
Since the passwords 222 and 242 for verifying the identity are written respectively, even if the person who picked up or stolen the IC card applied for reissue of the IC card earlier than the person for the purpose of misuse, Password verification can be performed at the counter, and erroneous issuance can be prevented by not reissuing the pair card for applicants who do not know the password. In addition, IC card A or IC
Part or all of the data to be written to each area of the memories 22 and 24 of the card B can be replaced with data encrypted using a predetermined encryption key. In particular, if security-related data is encrypted, forgery and erroneous issuance can be further prevented. If the encryption key used at this time is managed by the issuer, there is no problem in use, and the encryption key may be changed periodically. In addition,
The ID number and password of the partner's IC card are
Although it is written at a predetermined address in the pair card discrimination memory area, the predetermined address does not always mean a fixed address, and the issuer periodically changes the address,
By providing a certain rule, if the address is made variable within a range that can be grasped by the issuer, the security performance can be further improved. Further, here, the password data is written in the pair card discrimination memory area. However, the present invention is not necessarily limited to this area, and may be written in another memory area. In the card data areas 22b and 24b shown in FIG. 2, when the IC card of the present embodiment is a commuter pass of a train, cards such as a use section, a route, a use period, a user's name, gender, age, etc. Data is written, and if it is a ticket, the purchased amount is written, and each time the ticket is used, the usage amount is subtracted from the purchased amount and the amount data is updated. The data contents of the card data areas 22b and 24b match because the same data is always written.

FIG. 3 is a schematic perspective view of a ticket issuing machine used when purchasing a train ticket using the boarding card of the present embodiment. The ticket issuing machine 30 shown in FIG.
Insertion slot 32 for inserting 2 and 14 in an overlapping manner, display section 34 for displaying station information and fare information required for ticketing, transit information, information for discriminating adults and children, and various information displayed on display section 34 An operation key 36 to be selected and a carry-out port 38 for carrying out purchased tickets are provided. FIG. 4 is a schematic perspective view of the automatic ticket gate when passing directly through a ticket gate using the boarding card of the present embodiment. Automatic ticket gate 40 shown in FIG.
Is an insertion port 42 for inserting the paired IC cards 12 and 14 in an overlapping manner, a collection port 44 for collecting the inserted paired IC cards,
A display unit 46 for displaying the amount of money used, the card balance, and the like to the user by character display, an opening / closing door 48 for preventing shortage of charges and an unauthorized user from passing through the ticket gate, and a direction display unit 50 for notifying the user of the direction of the ticket gate. , And a sensor 52 for grasping the passing situation of the user. FIG. 5 is a block diagram showing an example of the configuration of an IC card reader / writer in the device shown in FIGS. 3 and 4 for performing card data read / write processing on a paired IC card according to the present embodiment. I shown in FIG.
The C card reader / writer 60 performs R (read) / W (write) processing on the IC card A by the IC card reader / writer A62, and converts the IC card B into the IC card reader / writer B6.
4, the R / W process is performed. Here, two reader / writers are provided, but it is of course possible to process two cards sequentially with one reader / writer. Further, the IC card reader / writer 60 operates the operation unit 6 for inputting various processing commands to the IC card.
6. a memory 68 for temporarily storing program data and a work area for performing card data read / write processing, a display unit 70 for displaying a processing status and a processing result,
And a control unit 72 for controlling the entire IC card reader / writer 60.

Next, the operation of using the paired IC card of the embodiment will be described. (In the case of a ticket issuing machine) First, when using the ticket issuing machine 30 of FIG. 3 using a paired IC card, the paired IC card 12, 1
4 are inserted from the insertion slot 32 as indicated by a white arrow G, and the paired IC card 12 is conveyed to the IC card reader / writer A62 and the paired IC card 14 is conveyed to the IC card reader / writer B64, and the card data The R / W process is executed for. At this time, the controller 72 shown in FIG.
Reads the ID number 22c of the card A by the IC card reader / writer A62 and the ID number 220 of the IC card B in the pair card discrimination memory area 22a, and reads the ID number 2 of the card B by the IC card reader / writer B64.
4c and the ID number 240 of the IC card A in the pair card discrimination memory area 24a,
As shown in FIG.
If the D numbers match, it is determined that the two IC cards are pair cards. When the card is recognized as a pair card in this manner, the ticket issuance processing of the content displayed on the display unit 34 is performed in accordance with the operation keys 36 of the user in the same manner as in the case of a normal IC card. The desired ticket is carried out. At this time, the ticket price is written by re-writing remaining amount data subtracted from the amount data written in the card data areas 22a and 22b of the IC cards A and B.
The data content is updated. If it is determined that the paired card is not a pair card because the ID numbers do not match each other, the subsequent processing is not performed, a message indicating that the card is not a correct IC card is displayed on the display unit 34, and the inserted paired IC card is displayed. The card will be returned. In addition, pair IC
If one of the cards is lost, the person who picked it up or stolen it would try to misuse it with one IC card,
Even if a single IC card is prepared and a copy of the same data is attempted to be abused as a pair card, the ID number unique to the pair IC card is collated as described above, so that the card is not recognized as a legitimate pair card. . Further, even if the card abuser knows the data structure of the paired IC card, it is not possible to know at which address in the paired card identification memory area the ID number of the other card is written. IC card cannot be duplicated. In particular, if the data written in the pair card discrimination memory area is encrypted with a predetermined encryption key, it is almost impossible to copy the IC card. Also, if one of the paired IC cards is picked up or stolen, the person goes to the issuing window and applies for a reissue procedure before he / she notices, and the operator puts the IC card on a reader / writer and sends the paired card shown in FIG. By reading the password written at a predetermined address in the discrimination memory area and comparing it with the password declared by the applicant, the identity can be easily confirmed. For this reason, there is no fear that the paired IC card is reissued carelessly and misused.

(In the case of an automatic ticket gate) When passing through the automatic ticket gate 40 shown in FIG. 4 using a paired IC card, the paired IC cards 12 and 14 are overlapped and the insertion slot 42 is inserted as shown by a white arrow H. From the pair IC card 12 inside
To the IC card reader / writer A62 and the paired IC card 1
4 is conveyed to the IC card reader / writer B64, and R / W processing is performed on each of the card data. Also in this case, the control unit 72 in FIG. 5 uses the IC card reader / writer A62 to output the ID number 22c of the card A,
I of the IC card B in the pair card discrimination memory area 22a
Reads the D number 220 and reads the IC card reader / writer B
64, the ID number 24c of the card B and the ID number 24 of the IC card A in the pair card discrimination memory area 24a.
0 is read out, and the ID numbers are collated in an intersecting manner as shown by arrows E and F in FIG. 2, and if the ID numbers match each other, it is determined that the two IC cards are pair cards. If it is determined that the card is a pair card, the basic fare is reduced in the automatic ticket gate 40 as shown in FIG.
It can be collected by subtracting from the money amount data written in the card data areas 22a and 22b of the C cards A and B, and the data content is updated by writing the remaining amount data again. The fare settlement details are shown on display 4
By displaying the information in 6, the user can be clearly notified. If it is determined that the paired card is not a pair card because the ID numbers do not match each other, the subsequent processing is not performed, a message indicating that the card is not a correct IC card is displayed on the display unit 46, and a warning (not shown) is displayed. Ring the chime and open and close door 4
By closing the ticket gate at step 8, misuse or misuse of the IC card can be prevented. When the user moves in the direction of the white arrow J along the ticket gate, a plurality of sensors 5 are installed.
2, the user's passing position can be grasped, so that the opening / closing door 48 can be operated and stopped at an appropriate timing. The return operation of the paired IC card
From the user in the direction of the white arrow I, and the user receives this. In the case of the automatic ticket gate 40, similarly to the case of the ticket issuing machine 30, a person who picks up or steals one of the paired IC cards tries to use one IC card or prepares another IC card. Even if a copy of the same data is abused as a pair card, the ID number is collated, and the card is not recognized as a legitimate pair card.

Further, even if the card abuser knows the data structure of the paired IC card, it is not known at which address in the paired card identification memory area the ID number of the other card is written. If the other IC card cannot be duplicated from the card, and if the data written in the pair card discrimination memory area is encrypted with the encryption key, the IC card itself cannot be duplicated. Furthermore, even if one of the paired IC cards is picked up or the stolen person goes to the issuing window before recognizing the person and applies for a reissue procedure, the password written at a predetermined address in the paired card discrimination memory area is not changed. By performing the collation, it is possible to easily confirm the identity of the user, thereby preventing erroneous issuance of the paired IC card. Note that in any of the above cases, if two paired IC cards are dropped or stolen at the same time, they will be misused as they are with normal IC cards. Only need to use in pairs. As described above, according to the present embodiment, the IC card is hardly misused for loss or theft, and even if the IC card is reissued, it is necessary to reissue only one IC card. Since such data is available, the reissuing procedure can be performed off-line, and the procedure can be performed in a short time regardless of the location. In the present embodiment, an IC card used as a boarding card for a train has been described as an example, but the present invention can be similarly applied to various other IC cards. In the present embodiment, the pair IC
Although the card was configured as a set of two cards, three or more cards were set to one by writing ID numbers so as to have a relevance to each other.
An IC card that can be used for the first time as a pair can also be provided.

[0013]

As described above, according to the first aspect of the present invention, at least the user's own IC card is stored in the first IC card.
The D number and the ID number of the second IC card are written,
At least your ID number and the first IC card
And the ID number of the IC card. When using an IC card, the first IC card and the second IC card match the ID number of the partner's IC card held by each other with their own ID numbers to be matched with each other, and match each other. Authenticate as a formal pair card and allow use. Therefore, even if one of the two IC cards is lost or stolen, it cannot be used with only one IC card, so that misuse can be prevented. Also, even if an attempt is made to create a pair card from one picked up or stolen IC card, simply duplicating the card data does not result in a pair card, so that it also has a forgery prevention effect. Furthermore, when one of the two pair cards is lost or stolen, and the reissue procedure is performed from the remaining one IC card, the information necessary to create a pair card in the remaining IC card Since everything is included, there is no need to inquire the card information to the center etc. online, and if there is only a certain promise and an IC card reader / writer, the place where reissue procedures can be performed is not limited, and Can be issued. According to the second aspect of the present invention, the first and second IC cards are provided with a pair card discrimination memory area for storing the ID number of the other party, and the ID number of the other party is stored in the pair card discrimination memory area. At a predetermined address. For this reason, a person who does not know the predetermined address cannot know which ID number is the ID number of the other party's IC card, so that a person cannot create a pair card and can surely prevent forgery. . According to the invention described in claim 3,
In the first and second IC cards, password data for confirming the identities is written separately from the ID numbers of the cards. For this reason, even if one of the two paired cards is lost or stolen, and the person who picked up or stolen applies for the reissue procedure first and tries to create a pair card, the password inquiry is made at the reissue window. This makes it possible to confirm the identity of the user and prevent unauthorized reissue procedures. According to the fourth aspect of the present invention, if at least a part of the data written in the first and second IC cards is encrypted using a predetermined encryption key,
Since it is almost impossible for a person without an encryption key to decrypt the data contents, an IC with higher security performance
Can be a card.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of a paired IC card according to the present embodiment.

FIG. 2 is a diagram illustrating data contents recorded in memories in IC chips incorporated in the IC cards A and B of FIG. 1;

FIG. 3 is a schematic perspective view of a ticket issuing machine used when purchasing a train ticket using the boarding card of the present embodiment.

FIG. 4 is a schematic perspective view of the automatic ticket gate when passing directly through a ticket gate using the boarding card of the present embodiment.

FIG. 5 is a block diagram showing an example of the configuration of an IC card reader / writer in the device shown in FIGS. 3 and 4 for performing card data read / write processing on a paired IC card according to the present embodiment.

[Explanation of symbols]

10 pair IC card, 12 IC card A, 12a
IC chip, 14 IC card B, 14a IC chip, 22, 24 memory, 22c Card A ID number, 22a Pair card discrimination memory area, 220 IC
Card B ID number, 24c Card B ID number, 2
4a Pair card discrimination memory area, 240 IC card A
ID number, 222, 242 password, 30 ticket issuing machine, 32 insertion slot, 34 display, 36 operation keys, 38
Carriage exit, 40 automatic ticket gate, 42 insertion slot, 44 collection port, 46 display unit, 48 opening / closing door, 50 direction display unit, 52 sensor, 60 IC card reader / writer, 6
2 IC card reader / writer A, 64 IC card reader / writer B, 66 operation unit, 68 memory, 70 display unit, 72 control unit.

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) G07F 7/12 G07F 7/08 C

Claims (4)

[Claims] 1. A paired IC card in which an IC card can be used only when a first IC card and a second IC card are used in pairs, wherein the first IC card includes at least The own ID number and the ID number of the second IC card are written therein, and at least the ID number of the user and the ID number of the first IC card are written in the second IC card. When the IC card is used, the ID numbers of the counterparts held by the first and second IC cards are matched with their own ID numbers to be matched, and the respective ID numbers match. A paired IC card characterized in that use is authorized as a formal paired card. 2. The first and second IC cards include:
2. A pair card identification memory area for storing an ID number of a partner is provided, and the ID number of the partner is written at a predetermined address in the pair card determination memory area.ぺ A IC card. 3. The first and second IC cards include:
3. The paired IC card according to claim 1, wherein password data for performing personal identification is written separately from the ID number. 4. The apparatus according to claim 1, wherein at least a part of the data written in the first and second IC cards is data encrypted using a predetermined encryption key. The paired IC card according to any one of the above.