JPH08221529A - Card and genuineness deciding system for same - Google Patents

Abstract

PURPOSE: To provide a card and a genuineness judging system for the same with which a card can be effectively prevented from being illegally used by forgery or alteration. CONSTITUTION: This card is provided with a magnetic data area 1 for recording the digital data of the balance or the like, random data area 3 for showing a different response for each card corresponding to the scan of a card reader and displaying the estimation of the balance by piercing a punched hole at one part of its area and magnetic data area 2 for recording digital data provided by scramble processing based on the response and the balance of the present card. Besides, the magnetic data areas 1 and 2 can be reloaded by a card writer.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a card and a card authenticity determination system for preventing unauthorized use due to forgery, falsification and the like.

[0002]

2. Description of the Related Art Conventionally, in order to prevent unauthorized use due to forgery or falsification of a prepaid card (hereinafter referred to as a PD card) that represents the remaining amount with magnetic data, a used PD card has a position corresponding to the remaining amount. If a punch hole is punched and the position of the punch hole and the balance represented by magnetic data deviate from a predetermined correspondence, measures are taken such as rendering the card unusable as a counterfeit card. .

[0003]

However, recently, there has been seen a technique for forging a PD card by closing a punch hole of a used PD card. According to this forgery method,
Even if you punch holes in the magnetic data storage area,
By forcing a punch hole with a magnetic material and then recording (encoding) magnetic data in a predetermined format so as to have a predetermined balance, it becomes possible to forge and illegally use a PD card. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a card and a card authenticity determination system that can effectively prevent unauthorized use due to counterfeiting or falsification of a card.

[0004]

According to another aspect of the present invention, there is provided a display unit for displaying a response to a scanning, which is different for each card, and a display unit for displaying a standard amount of a remaining amount or a used amount due to destruction of a partial area. It is characterized by comprising a recording unit rewritably recording key information based on the response and the remaining amount or the used amount in the card, and the remaining amount information or the used amount information. According to a second aspect of the present invention, in the card according to the first aspect, the display portion is a magnetic recording layer formed by printing an irregular pattern with ink containing a magnetic substance. According to a third aspect of the present invention, in the card according to the first aspect, the display portion is a magnetic recording layer formed by printing with an ink in which a needle-shaped magnetic material is dispersed.

According to another aspect of the card authenticity determination system of the present invention, each card shows a different response to scanning, and a display section for displaying a standard of the amount used or the balance due to destruction of a partial area, and its own card. Is a card authenticity determination system for determining the authenticity of a card provided with a recording unit for rewritably recording the used amount information or the remaining amount information, and inputs an instruction of a user of the card. For inputting information, communication means for communicating with a host computer, card inserting / ejecting means for inserting and ejecting the card, scanning means for scanning the display section of the card, and recording in the recording section. A reading unit for acquiring the used amount information or the remaining amount information, an updating unit for updating the recorded contents of the recording unit, and a partial area of the display unit are destroyed. When the area destruction means and the respective means are connected, the response obtained by the scanning of the scanning means is registered in the host computer through the communication means, and the card is inserted by the card input means, When the response and the used amount information or the remaining amount information for the card are acquired by controlling the scanning unit and the reading unit, and the response does not match a part of the response registered in the host computer. Includes a processing means for determining the card as a counterfeit card, and the processing means is input by the information input means when the response matches a part of the response registered in the host computer. The amount used or the remaining amount is changed based on the instruction, and the contents recorded in the recording unit of the card are updated by the updating means, and after the updating, It is characterized in that to destroy a part region on the display unit corresponding to the use amount and balance in the region rupturing means. The authenticity determination system for a card according to claim 5, wherein the processing means causes the scanning means to scan the display section whose partial area is destroyed by the area destroying means,
If the response obtained by this scanning does not match a part of the response registered in the host computer, the card is determined to be an unusable card.

According to another aspect of the card authenticity determination system of the present invention, the card displays different responses to scanning, and a display unit for displaying a standard of the amount used or the balance due to destruction of a partial area, and the display. Card for judging authenticity of a card provided with a response to scanning of a copy, key information based on the used amount or the remaining amount, and a recording unit rewritably recording the used amount information or the remaining amount information Of the authenticity determination system, wherein card input / output means for inserting and ejecting the card, scanning means for scanning the display portion of the card, the key information recorded in the recording portion, and the usage amount. Reading means for obtaining information on the balance or the balance information, writing means for writing the key information and the information on the usage amount or the balance information on the recording part, and a part of the display part A region rupturing means to destroy the band,
When the card is connected to the respective means and the card is inserted by the card input means, the response obtained by the scanning of the scanning means and the used amount information or the remaining amount information obtained by the reading means A processing unit for generating the key information based on the above, and for determining the card as a counterfeit card when the key information and the key information directly obtained from the recording unit of the card by the reading unit do not match. When the both key information match, the processing means changes the used amount or the remaining amount based on an instruction input by the information input means, and changes the used amount or the remaining amount after the change. The updating means writes the data in the recording section of the card, and at the same time, the area destruction means destroys a partial area on the display section corresponding to the changed usage amount or remaining amount. , Generates the key information based on the display part region is destroyed and such amounts or balance of the changed and responses obtained by scanning said scanning means,
The key information is written in the recording unit by the writing unit.

[0007]

The card according to claims 1, 2 and 3 and claim 6
According to the card authenticity determination system described, a different response for each card obtained by scanning the display unit that displays the remaining amount or the amount of use due to the destruction of a partial area and the amount of use recorded in the recording unit Alternatively, key information based on the balance is recorded in the recording unit. That is, the key information recorded in the recording unit reflects the destruction state of the display unit. According to the card authenticity determination system of claims 4 and 5, the processing means registers the response obtained by the scanning of the scanning means in the host computer through the communication means, and the card input means. When the card is inserted by the above, the scanning means and the reading means are controlled to obtain the response to the card and the usage amount information or the balance information, and the response is registered in the host computer. If it does not match a part of the response, the card is determined to be a counterfeit card. Furthermore, when the response matches a part of the response registered in the host computer, the processing unit changes the used amount or the remaining amount based on an instruction input by the information input unit, The updating unit updates the recorded contents of the recording unit of the card, and causes the region destroying unit to destroy a partial region on the display unit corresponding to the updated usage amount and remaining amount. Further, according to the card authenticity determination system of claim 5, the processing means causes the scanning means to scan the display portion whose partial area has been destroyed by the area destroying means, and obtains by this scanning. If the response does not match a part of the responses registered in the host computer, the card is determined as an unusable card.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A card and a card authenticity judging system according to an embodiment of the present invention will be described below with reference to the drawings. 1A to 1C are views for explaining the structure of the card according to the present embodiment, and in the card shown in FIG. 1A, the remaining amount decreases according to the used amount. The card is a prepaid card, and is provided with a magnetic data area 1 and a magnetic data area 2 on which a magnetic ink material is printed, and a random data area 3 on which a random magnetic pattern to be described later is created.

The magnetic ink material printed on the magnetic data areas 1 and 2 is obtained by dispersing the magnetic material in a solvent containing a polymer binder. Examples of magnetic materials in the magnetic ink material include Fe, Ni, Mn, Co, permalloy, sendust, Mn-Zn ferrite, Ni-Zn ferrite, Mn ferrite, Zn ferrite, FeS,
Powders of metals and alloys such as magnetite, γ-iron oxide, Co-deposited γ-iron oxide, barium ferrite, strontium ferrite, and chromium dioxide, and metal compounds can be used.

The magnetic ink material is uniformly printed on the magnetic data areas 1 and 2 by a printing method such as gravure printing, screen printing or offset printing, and a magnetic pattern layer having a predetermined thickness is formed on each area. To do. And
In the magnetic pattern layer of the magnetic data area 1, digital data representing the maximum usable amount of money and the balance of the card is encoded (recorded in a predetermined format). In addition, when the card is not used, the maximum usable amount and the balance match. Further, in the magnetic pattern layer of the magnetic data area 2, digital data (which will be described later in detail) for determining the validity of the card is encoded.

On the other hand, the random magnetic pattern printed in the data area 3 is a different pattern for each card, for example, as shown in FIG. 1 (b).
In this figure, the portion shown in black is the portion printed with the magnetic ink material, and the portion shown in white is the portion not printed with the magnetic ink material. The random magnetic pattern is created by the various printing methods described above. For example, a random magnetic pattern is created by spraying a liquid that dissolves the screen onto a screen and printing a magnetic ink material using the plate (screen) thus obtained.

If a magnetic ink material prepared by dispersing magnetic fibers (needle-shaped magnetic material) in ink is used,
As shown in FIG. 8, different magnetic patterns can be formed with the same print pattern. In this case, since printing can be performed using the same plate, printing cost can be reduced. The material of the magnetic fiber is Fe, Fe-Si, Fe-Al, Fe-Si-.
Al, Fe-Si-B, Fe-Ni, Fe-Co, Fe
-Ni-Co or various materials mainly composed of Fe-Si binary element and Fe-Ni binary element, Fe-As, Fe-Sn, Fe-
P and the like. The magnetic fiber has about 5
It has a diameter of ˜20 μm and a length of 3 to 5 mm.

FIG. 1 (c) shows a signal waveform obtained by moving the magnetic head of the card reader in the direction A in the figure on the random magnetic pattern as shown in FIG. 1 (b). Although FIG. 1B and FIG. 1C are drawn at the corresponding positions, the signal waveform of FIG. 1C has a pattern different from the random magnetic pattern shown in FIG. 1B. However, if the random magnetic patterns are slightly different, the obtained signal waveforms will also be different. Since the random magnetic pattern is created by, for example, the method described above, the same random magnetic pattern is not actually created. Therefore, the signal waveform based on the random magnetic pattern is also different for each card.

The digital data (key information) recorded on the magnetic pattern layer of the magnetic data area 2 for determining the validity of the card is a signal waveform (analog data) based on the random magnetic pattern. It is obtained by scrambling based on the converted random data (digital data) and the magnetic data (digital data) recorded on the magnetic pattern layer of the magnetic data area 1. Any method may be used as a method of converting analog data into digital data as long as the converted digital data is guaranteed to be different for each card.

In the card having the above-mentioned structure, when the card is used, for example, as shown in a range B of FIGS. 2A to 2C, a random data area 3 corresponding to the balance of the card is used. A punch hole 4 is punched in the upper position, and digital data obtained by scrambling processing based on random data obtained after punching and magnetic data in the updated magnetic data area 1 is encoded in the magnetic data area 2. To The diameter of the punched holes 4 is a size that can give a sufficient change to the random data and can reliably verify that the random data based on the punched random magnetic pattern is a part of the original random data. Set to.

In addition to this, when a card is used, not only the magnetic data in the magnetic data area 1 but also the magnetic data and random data in the magnetic data area 2 are read out, and these data maintain consistency. The authenticity of the card is determined by determining whether or not the card is present. Further, as is clear from the above, it is impossible to restore a random magnetic pattern, a part of which disappears due to perforation. Therefore, if this card is used, it is completely impossible to forge, falsify and illegally use the card. The punch hole 4 does not need to penetrate the card, and may be formed at a depth that allows the magnetic ink layer to be removed.

Next, a card authenticity determination system according to this embodiment will be described with reference to FIGS. FIG. 3 is a block diagram showing a schematic configuration of this system, and the system shown in this figure is based on the use of the above-mentioned card. In FIG. 3, reference numeral 5 denotes a card inserting / extracting means for conveying a card inserted by a user from a card insertion / exit to a predetermined position and ejecting a card at a predetermined position from the card insertion / exit, and 6 inserted into the system. Is a card reader that reads each data recorded in the magnetic data areas 1 and 2 and the random data area 3 of the recorded card with a magnetic head, and can simultaneously read the magnetic data in the magnetic data areas 1 and 2 It has a function of scanning the random magnetic pattern in the area 3 and outputting a signal (analog data) corresponding thereto.

Reference numeral 7 denotes a data conversion means for converting analog data output from the card reader 6 into random data (digital data), for example, a general A / D.
A converter is used. Reference numeral 8 is a card writer for writing digital data supplied from a processing means 13 which will be described later into the magnetic data areas 1 and 2 of the card inserted in the present system, and 9 is a processing means 13 on the random data area of the card. A punching means for punching a punch hole having a predetermined diameter at a designated position, 10 is an information inputting means for inputting a user's instruction, 11 is an information presenting means such as a display device or a voice output device, and from the processing means 13. Present the user with the information represented in the supplied data. Reference numeral 12 is a communication means for communicating between the processing means 13 and a host computer (hereinafter referred to as a host) during online operation.

The processing device 13 includes a CPU, a RAM, and a ROM.
And the like, and creates and outputs data for controlling each of the units 5 to 12 based on a program stored in the ROM, for example. The processing performed by executing the above program will be described in detail later. In FIG. 3, an alarm means is connected to the system, which is used to notify the administrator of the system when the used card is determined to be a counterfeit card. It is a thing.
Of course, this alarm means also operates based on the data output from the processing means 13.

Next, the operation of the card authenticity determination system having the above-described configuration will be described separately for online operation and offline operation. (Α) Online operation First, referring to FIG. The initial encoding process when online will be described. The initial encoding process is a process for making the above-described card usable in this system, and the card subjected to this process is sold to the user. This initial encoding process may be performed by the present system, or a dedicated device may be separately used. This system is used here.

First, in FIG. 4, when a card to be subjected to initial encoding is inserted into the system, the magnetic data area 1 is encoded in step S1. Here, the initial magnetic data recorded in the magnetic data area 1 is data representing the usable amount, the remaining amount, etc., and is stored in advance in the RAM or the like of the processing means 13. This data is also used in the subsequent step S6.

Next, in step S2, an area to be read on the random data area (hereinafter referred to as a random data read area) is set as a preprocessing for reading the random data. This setting is performed by the information input means 1
The processing means 13 performs the processing based on the data input from 0. Next, in step S3, data representing the area set by the processing means 13 is supplied to the card reader 6, and the card reader 6 obtains a signal corresponding to the random magnetic pattern.

Next, in step S4, the data conversion means 7 converts the signal output from the card reader 6 into random data, and supplies the random data to the processing means 13. Then, in step S5, the processing means 13 causes the communication means 12 to operate.
Random data is sent to the host via. Thereby, the random data is registered in the host. Next, in step S6, scrambling processing is performed based on the random data and the aforementioned initial magnetic data,
The obtained data is recorded in the magnetic data area 2. The above is the initial encoding process.

Next, the operation of the present system when the card subjected to the initial encoding process is used online will be described with reference to FIG. In FIG. 5, when the card is inserted through the card inlet / outlet, first, step S
At 7, the card reader 6 reads magnetic data from the magnetic data area 1. The magnetic data read here is stored in the RAM of the processing means.

Next, in steps S8 to S10, as in steps S2 to S4 described above, the setting of the random data read area, the acquisition of the signal corresponding to the random magnetic pattern, and the conversion into random data '(digital data) are performed. Done. Next, in step S11, the processing device 1
3 reads out the random data registered corresponding to the card among the data registered in the host via the communication means 12, and the random data ′ obtained in step S10 is a part of the random data. It is determined whether or not (in the case of a card which has not been punched yet, whether or not the two completely match). If the result of this determination is "NO", then the procedure goes to step S20, where it is notified via the information presenting means 11 that the validity of the card cannot be confirmed. Further, this fact is also transmitted to the manager of this system via the alarm means. Then, the card is ejected.

The determination result in step S11 is "YES".
If so, the process proceeds to step S12, where an instruction from the user is input via the information input unit 10, and the processing unit 13 causes each unit of the system to perform a process based on the input instruction. And the amount of money set corresponding to the instruction is subtracted from the amount of money (remaining amount) represented by the magnetic data read in step S7. The subtraction result (magnetic data) is recorded in the magnetic data area 1 by the card writer 8. It should be noted that this magnetic data is used in the subsequent step S19.

Next, the process proceeds to steps S13 and S14. Steps S13 and S14, S
Reference numeral 15 is a processing system that is executed in parallel, and step S1
At 6, the two systems will be synchronized. Step S
At 13, the random data read area is set. On the other hand, in step S14, based on the subtraction result, the processing means 13 sets the position for punching the punched hole 4 in the random data area 3, and in step S15, the punching means 9 sets the punched hole 4 at that position. Pierce. In addition,
The position setting in step S14 is performed in step S13.
It is set based on the area and magnetic data (usable amount and remaining amount of card) set in.

Steps S16 to S17 are step S9.
Are the same steps as S10 to S10, and the random data "obtained in step S17 are stored in the RAM of the processing means 13. Step S18 is almost the same step as step S11, and the random data" is stored in the host. It is determined whether or not it is a part of the registered random data. If the determination result is “NO”, the process proceeds to step S20, and conversely, if the determination result is “YES”, the process proceeds to step S19.

The step S19 is substantially the same as the step S6.
The scramble processing is performed based on the magnetic data obtained in 2 and the obtained magnetic data is recorded in the magnetic data area 2
Recorded in. When the above processing is completed, the card insertion / ejection means 5 ejects the card, and a series of processing is completed.

(Β) Off-line Operation Next, with reference to FIG. 6, the initial encoding process during off-line will be described. The process shown in FIG. 6 is different from the process shown in FIG. 4 in that there is no step corresponding to step S5 of FIG. That is, step S24
The random data obtained in step S25 is used for the scrambling process in step S25 without being registered in the host.

Next, the operation of this system when the above-mentioned card subjected to the initial encoding process is used offline will be described with reference to FIG. In FIG. 7, when the card is inserted through the card inlet / outlet, first, the processes of steps S26 and S27 are executed in parallel, and the magnetic data in the magnetic data areas 1 and 2 are read by the card reader 6. The respective magnetic data ',' read here are stored in the RAM of the processing means 13. Then, the process proceeds to step S28.

Since steps S28 to S30 are the same as steps S8 to S10 described above, the description thereof will be omitted. Next, in step S31, a scramble process is performed based on the random data'obtained in step S30 and stored in the RAM of the calculating means 13 and the magnetic data'obtained in step S26 to obtain magnetic data. .

This magnetic data is collated by the calculating means 13 with the magnetic data 'obtained in step S27 in the next step S32, and it is determined whether or not they match. If this determination result is "NO", the process proceeds to step S33, and conversely, if "YES",
The process proceeds to step S34. Since step S33 is the same process as step S20 described above, description thereof will be omitted. When the process of step S33 is performed, the card is ejected by the card insertion / ejection means 5.

On the other hand, steps S34 to S39 are the same as steps S12 to S17 described above, and therefore their description is omitted. Steps S34 to S above
When the process of 39 is completed, the process proceeds to step S40. Step S40 is substantially the same step as step S19, and the processing means 13 performs scrambling processing based on the random data ′ obtained in step S39 and the magnetic data obtained in step S34. The magnetic data obtained as a result of this scramble processing is recorded in the magnetic data area 2 by the card writer 8. After that, the card is ejected, and the series of processing ends.

As described above, according to the embodiment of the present invention, the punching holes 4 are formed at the positions on the random data area 3 corresponding to the remaining amount of the card, and the random data obtained from the random data area 3, Alternatively, since the validity of the card is determined based on the random data and the magnetic data in the magnetic data area 2 encoded based on the remaining amount of the card and the like, the unauthorized use due to counterfeiting or falsification of the card is surely ensured. Can be prevented.

Further, when online, the validity of the card is judged by referring to the random magnetic pattern.
Even if the scramble condition is solved, it is not possible to create a modified card using a used card. Further, since it is not necessary to connect the host and this system when offline, network installation cost and communication cost can be reduced. Further, at the time of online, the random pattern is inquired after the punch hole 4 is punched, so that when inappropriate punching is made due to some accident or the like, this can be reliably detected.

Although the unique pattern provided for each card is a magnetic pattern according to the above-described embodiment, it may be a pattern other than magnetic. However, in this case, a means for outputting a signal corresponding to the pattern is required. Further, in the above embodiment, the unit such as the remaining amount of the card is the amount of money, but the unit is not limited to this and may be another unit such as a frequency. Further, although the punched holes 4 are punched in the random data area 3, the punched holes are not limited to the punched holes. That is, it is only necessary to destroy a part of the random data area 3 by any means. Further, it goes without saying that the punching position in the random data area 3 may be used as a standard for the usage amount instead of the remaining amount.

[0038]

As described above, according to claims 1, 2, 3
According to the invention described in (6) and (6), a different response for each card obtained by scanning the display unit that displays the standard of the remaining amount or the used amount due to the destruction of the partial area and the used amount or the remaining amount recorded in the recording unit are obtained. The key information based on is recorded in the recording unit. That is, the key information recorded in the recording unit reflects the destruction state of the display unit.
Therefore, by judging the validity of the card on the basis of the key information, there is an effect that it is possible to surely prevent the unauthorized use due to the forgery and falsification of the card.
Further, according to the invention described in claims 4 and 5, the processing means registers the response obtained by the scanning of the scanning means in the host computer through the communication means, and the card is inserted by the card inputting means. If
When the response and the used amount information or the remaining amount information for the card are acquired by controlling the scanning unit and the reading unit, and the response does not match a part of the response registered in the host computer. Judges the card as a counterfeit card. Since the response is unique to each card, there is an effect that it is possible to reliably prevent unauthorized use due to counterfeiting or falsification of the card. Further, the processing means causes the scanning means to scan the display portion whose partial area is destroyed by the area destroying means,
If the response obtained by this scanning does not match a part of the response registered in the host computer, the card is determined as an unusable card. Therefore, when an inappropriate area is destroyed due to some accident, etc.,
This has the effect of being able to reliably detect this (Claim 5).

[Brief description of drawings]

1A and 1B are views for explaining the structure of a card according to an embodiment of the present invention, FIG. 1A is a view showing the entire structure of the card, and FIG. 1B is a view showing an external appearance example of a random data area 3; (C) is a diagram showing a response example of the random data area 3.

2A and 2B are diagrams for explaining a case where a punch hole 4 is punched in the card, FIG. 2A is a diagram showing an overall structure of the card, and FIG. 2B is a diagram showing an appearance example of a data area 3;
(C) is a diagram showing a response example of the random data area 3.

FIG. 3 is a block diagram showing a schematic configuration of a card authenticity determination system according to an embodiment of the present invention.

FIG. 4 is a processing diagram for explaining initial encoding processing when the system is operated online.

FIG. 5 is a processing diagram for explaining a method of using the system when operated online.

FIG. 6 is a process diagram for explaining an initial encoding process when the system is operated offline.

FIG. 7 is a processing diagram for explaining a method of using the same system when operated offline.

FIG. 8 is a diagram for explaining another aspect of the random pattern.

[Explanation of symbols]

1, 2 Magnetic Data Area (Recording Section) 3 Random Data Area (Display Section) 4 Punch Holes 5 Card Inserting / Extracting Means 6 Card Reader (Reading Means) 7 Data Converting Means (Composes Scanning Means with Card Reader 7) 8 Card Writer (Update means, writing means) 9 Punching means (area destruction means) 10 Information input means 11 Information presenting means 12 Communication means 13 Processing means

Claims (6)

[Claims] 1. A display unit showing a different response to each scanning for each card, and displaying a guideline of the remaining amount or the used amount by destroying a partial area, and the response and the remaining amount or the used amount in the own card. A card having a rewritable recording unit for rewriting the key information based on the above and the remaining amount information or the used amount information. 2. The card according to claim 1, wherein the display portion is a magnetic recording layer formed by printing an irregular pattern with an ink containing a magnetic material. 3. The card according to claim 1, wherein the display portion is a magnetic recording layer formed by printing with an ink in which a needle-shaped magnetic material is dispersed. 4. A display unit showing a different response to scanning for each card, and displaying a guideline of the used amount or the remaining amount due to destruction of a partial area, and the information of the used amount or the remaining amount on the own card. Is a rewritable recording system for determining the authenticity of a card, the information authenticating means for inputting an instruction from a user of the card, and a communication with a host computer. Communication means for doing, card inserting / ejecting means for inserting and ejecting the card, scanning means for scanning the display portion of the card, information on the used amount recorded in the recording portion or the balance. A reading unit that acquires information, an updating unit that updates the recorded contents of the recording unit, an area destroying unit that destroys a partial area of the display unit, and a connecting unit that connects each unit. Registering a response obtained by the scanning of the scanning means in the host computer via the communication means, and controlling the scanning means and the reading means when the card is inserted by the card input means. Processing means for acquiring the response and the used amount information or the remaining amount information for the card, and determining the card as a counterfeit card when the response does not match a part of the response registered in the host computer The processing means, when the response matches a part of the response registered in the host computer, determines the usage amount or the remaining amount based on the instruction input by the information input means. The display contents corresponding to the used amount and the remaining amount after the updating are changed and the recorded contents of the recording unit of the card are updated by the updating means. Card authenticity determination system, characterized in that to destroy a part region above the region rupturing means. 5. The processing means causes the scanning means to scan the display portion whose partial area is destroyed by the area destroying means, and a response obtained by this scanning is one of the responses registered in the host computer. The authenticity determination system for a card according to claim 4, wherein the card is determined to be an unusable card when it does not match the copy. 6. A display unit showing a different response to a scanning for each card, and displaying a guideline of the usage amount or the remaining amount by destroying a partial area, a response to the scanning of the display unit and the usage amount or the What is claimed is: 1. A card authenticity determination system for determining authenticity of a card, comprising a key portion based on a balance and a recording unit that rewritably records the usage amount information or the balance information. Card input / output means for inserting and ejecting, card scanning means for scanning the display part of the card, and the key information and the usage amount information or the balance information recorded in the recording part. Reading means, writing means for writing the key information and the used amount information or the remaining amount information in the recording section, area destruction means for destroying a partial area of the display section, and each hand When the card is connected to a column and the card is inserted by the card input means, based on the response obtained by the scanning of the scanning means and the information of the used amount or the information of the remaining amount obtained by the reading means. And generating the key information and determining the card as a counterfeit card when the key information does not match the key information directly obtained from the recording unit of the card by the reading unit. However, when the both key information match, the processing unit changes the used amount or the remaining amount based on an instruction input by the information input unit, and updates the changed used amount or the remaining amount. Writing to the recording section of the card by means, and causing the area destruction means to destroy a partial area on the display section corresponding to the changed usage amount or remaining amount, and partially The key information is generated based on a response obtained by scanning the display unit whose area has been destroyed by the scanning unit and the changed usage amount or remaining amount, and the writing unit stores the key information. A card authenticity determination system characterized by writing in.