JPH0830744A - Magnetic card illegality prevention method - Google Patents

Abstract

PURPOSE:To inhibit a card from being re-utilized for an illegal purpose by piercing a punch hole on the magnetic data of a magnetic card corresponding to the used amount of money and destroying magnetic information. CONSTITUTION:When the magnetic card 1 is processed in a card processor, the punch hole is pierced in the card 1 by a punch 4 when the card 1 is used for the first time and the punch hole of a balance amount display punch 5 is pierced by the used amount of money in the card 1. The balance amount display punch 5 is pierced on a track where the data of balance amount display 8 are recorded as the magnetic information. Finally, when the total amount of money is used up, the punch hole of a card used punch 6 is pierced. The first track 3 can not be rewritten in the card processor. In the card processor, when the card is processed, a card issuance face value money amount 2 is read by a sensor, whether or not illegality is present in the upper limit money amount of the card 1 is judged by comparing the card money amount information of the first track 3 with the balance amount data of a second track 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fraud prevention method for card information such as magnetic cards.

[0002]

2. Description of the Related Art In a so-called prepaid card such as a magnetic card, mainly a telephone card, various fraud prevention measures are used. Basically, the content is not disclosed due to confidential information.

However, as a practically widely known method, there is a method of punching a punch hole on a card for each usage frequency.

[0004]

In the conventional example of punching holes, there has been a method of tampering by processing the card so that the punch holes are not punched. The fraud prevention measures are disclosed, for example, in Japanese Patent Application No. 6-83918. Regarding the prevention of fraudulent punching, there is also a drawback that if the punched holes are accurately corrected, they can be reused. In addition, punch holes are often used as information for comparison with the frequency of use in magnetic information, and punch holes have not been used to destroy magnetic information. Further, the magnetic information may be illicitly rewritten by using another recording device. Conventionally, so-called prepaid cards such as telephone cards have the above-mentioned drawbacks, and the fraud prevention is not perfect, and there is a problem that fraudulent cards can be easily created.

[0005]

According to the present invention, in the magnetic card in which the information of the issued amount is recorded on the surface of the magnetic card by invisible printing, the amount of the used amount can be dealt with when the magnetic card is used. A magnetic card fraud prevention method characterized by punching a punch hole on the magnetic data of the magnetic card to destroy the magnetic information, thereby making it impossible to reuse the card for fraudulent purposes Is.

[0006]

【Example】

(First Embodiment) FIG. 1 shows an embodiment of the present invention. Reference numeral 1 denotes a magnetic card on which magnetic information and the like are recorded, which is a so-called prepaid card. 2 is for printing the card face value by using stealth printing or other invisible printing, and recording the upper limit of the card as invisible information. Reference numeral 3 is a first track for recording magnetic information, and the amount information is recorded with a high coercive force when the card is issued.

FIG. 2 is a view showing a card processing device, in which a magnetic card carrying roller 1 is provided along a carrying path of the magnetic card 1.
3, an invisible print reading sensor 9, a read magnetic head 10 for reading the first track information, a magnetic card carrying roller 13 ', a read / write magnetic head 11 for reading and recording the second track information, a punch hole punching solenoid Have twelve. FIG. 3 is a diagram for explaining the control of the card processing device. The processing unit CPU controls data processing and control by programs stored in the memory ROM, the memory RAM for storing data, and the head control for controlling the magnetic head H. The unit HC includes a solenoid control unit SC1 for opening a punch on a card, a sensor control unit SC2 for reading invisible information, and a host computer H.

The operation of the embodiment having the above configuration will be described.

When the card 1 is processed by the card processing device, when the card 1 is used for the first time, a punch hole is punched in the card 1 by the punch 4, and the remaining amount display punch 5 depending on the amount of money used in the card 1. Punch holes are punched. The remaining amount display punch 5 is configured to punch the data of the remaining amount display 8 on the track where the data is recorded as magnetic information. Finally, when the total amount of money is used up, the punch holes of the card used punch 6 are punched. The first track 3 cannot be rewritten by the card processing device. The second track 7 has the remaining amount data recorded on the track as magnetic data, and can be read and recorded by the sensor of the card processing device. In the card processing device, when the card is processed, the card issuance face value 2 is read by the sensor, and it is determined whether or not the upper limit amount of the card is illegal and the card amount information 3 of the first track and the remaining amount of the second track. The processing unit CPU compares the data 7 with the data 7 for determination. Therefore, the data of the card issue face amount 2, the card amount information 3 of the first track, and the remaining amount data 7 of the second track are used as a fraud prevention method. According to this method, a fraudulent card cannot be easily created, which is a great advantage as a fraud prevention method.

(Second Embodiment) As a method of destroying the data on the first track 3, punch holes are used in the present invention.
As a method of destroying the magnetic data, another method of destroying the magnetic data surface by scratching or the like may be used. It is also possible to magnetically erase. That is, a method of erasing the magnetic data by using a magnet or the like may be used. In addition, in the present invention, recording of high coercive force is used for recording magnetic information on the first track 3 in order to improve accuracy of fraud prevention, but coercive force which is generally used may be used. .

In using a so-called prepaid card using a magnetic card, a counterfeit card may be used. Until now, in magnetic cards and card processing devices, although technical measures have been taken against fraudulent cards, it is also quite difficult to find a perfect method. The reason for this is that the previous fraud prevention methods are:
In many cases, data such as cash information is recorded on the magnetic recording itself by using a code to prevent fraud, so if you rewrite the magnetic data exactly and rewrite it on another card, you could easily forge it. It is in.

In the present invention, in addition to the magnetic information as the information for confirming fraud, a total amount of three data, that is, the card issuance face amount 2 and the amount information 3 of the first track as the magnetic information and the balance data 7 of the second track are used. Since the comparison is performed by using the method, there is an effect of improving the accuracy of fraud prevention.

[0013]

As described above, according to the present invention, in the magnetic card in which the information of the issued amount is recorded by invisible printing on the surface of the magnetic card, the amount of the used amount is corresponded when the magnetic card is used. By punching holes on the magnetic data of the magnetic card and destroying the magnetic information, it is possible to prevent unauthorized reuse of the card.

[Brief description of drawings]

FIG. 1 is a diagram showing a magnetic card for explaining an embodiment of the present invention.

FIG. 2 is an explanatory view of a mechanism of a magnetic card processing device.

FIG. 3 is a diagram showing a control unit of the magnetic card processing device.

[Explanation of symbols]

 1 Magnetic card 2 Invisible printing of face value of card issuance 3 First track where card amount information is recorded 4 First punch used for card 6 Card used punch 7 Second track where balance data is recorded

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Claims (1)

[Claims] 1. A magnetic card in which information on the issued amount is recorded on the surface of the magnetic card by invisible printing, and when the magnetic card is used, punch holes are formed on the magnetic data of the magnetic card according to the used amount. A magnetic card fraud prevention method, characterized by punching and destroying magnetic information.