JPH08249434A - Method for preventing illegality on prepaid card - Google Patents

Abstract

PURPOSE: To effectively prevent an illegality such as a remodeling, etc., by writing arbitrary patterns such as characters or pictures in the blank part beyond the part of a balance when the balance becomes 0 and writing the characters or pictures in also the code of an initial code area by overlapping them. CONSTITUTION: In the code area 17 of value information, two-dimensional code information 18, 19 and 20, etc. showing the balance that the prepaid card in the process of using the prepaid card holds are written. When a balance is zero, arbitrary patterns are written in a blank part 17a which is left as it is in a conventional prepaid card. For instance, the pattern 24 composed of the two-dimensional code which is completely painted out to full black is written so that a part of the pattern may be continuous on and overlapped the amount information 14 to be written in the initial code area 12 by the two-dimensional code at first. In a blank part 17a, a character 25 such as 'Thank you very much', etc., for instance, is written.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a prepaid card fraud prevention method capable of effectively preventing fraudulent use such as modification.

[0002]

2. Description of the Related Art Bar codes for product management are attached to products currently on the market. This bar code is assigned to each product provider, but the bar code allocation is approaching its limit with the diversification of product types. Therefore, the idea of using a two-dimensional code such as the Carla code (registered trademark of Alec Japan) as a new code is emerging. Further, in a wide range of fields such as telephone companies and transportation companies, a sales system using a prepaid card with advance payment is used.

FIG. 2 is a plan view showing the structure of a conventional prepaid card in which the two-dimensional code is written. In the figure, 1 is a prepaid card body, 2 is an initial code area along which one side of the prepaid card body 1 is initially set by a prepaid price, and an initial code area in which a two-dimensional code and a number are written. The amount information indicating the remaining amount of money in the process is a remaining amount code area in which a two-dimensional code and a number are written, and the additional amount is sequentially written downward in parallel with the initial code area 2.

FIG. 3 is a back view showing the back surface of the prepaid card body 1. Reference numeral 4 is key information 4a for writing in the initial code area 2 and the balance code area 3 or reading the written two-dimensional code. The invisible writing area is invisiblely written, and the invisible writing area 4 is set in advance for each prepaid card.

FIG. 4 is a cross-sectional view of the prepaid card body 1. Reference numerals 5 and 6 are protective layers for covering the surface of the prepaid card, and 7 is a card substrate formed between the protective layers 5 and 6. A heat-sensitive layer 8 is provided between the card base 7 and the protective layer 5 for recording a two-dimensional graphic code and numbers. The two-dimensional codes and numbers in the initial code area 2 and the remaining code area 3 are colored and displayed visually when the heat-sensitive layer 8 is heated.

[0006]

Since the conventional prepaid card is configured as described above, the code in the balance 0 column written at the end of the balance code area 3 is modified so that the balance remains. Using the blank area 3a, or the amount information 3b indicating the value of the prepaid card initially set and written in the initial code area 3 is cut out, and the initial code area 3 and another low-value prepaid card There may be a case where fraud such as remodeling is easily performed by directly connecting the remaining amount code area 3 in the blank area, and such a countermeasure for fraud prevention is desired. was there.

The present invention has been made to solve such problems, and an object of the present invention is to provide a fraud prevention method for a prepaid card which effectively prevents fraud such as modification.

[0008]

According to the method for preventing fraud of a prepaid card according to the present invention, initial amount information initially set by advance payment is written along one side of the card by a two-dimensional graphic code and a number. In the fraud prevention method of a prepaid card having a code area and a balance code area in which the process of using the amount of money is written, the balance code area is a first side along the other side of the card opposite the initial code area. When a line is written, and the remaining lines are sequentially written upward from the next line and the remaining amount becomes 0, an arbitrary pattern such as a character or a picture is written in the blank area and a code in the initial code area. It is also characterized by being overwritten with letters or pictures.

[0009]

According to the method for preventing fraud of a prepaid card of the present invention, when the residual value of the prepaid card is lost,
In the blank area of the value information code area, any pattern such as letters or pictures is written over at least part of the display pattern of the value information that is initially set and written in the initial code area, so there is no residual value. There is no blank area on the prepaid card, and the code in the balance 0 column is modified, or unauthorized modification and direct connection of the blank area directly to the initial code area or the residual code area It is possible to effectively prevent unauthorized modification that directly connects to the balance code area of another low-value prepaid card.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view showing the structure of the prepaid card of this embodiment. In the figure, 11 is a prepaid card body, 12 is an initial code area in which the amount information held by an unused prepaid card is written along one side 13 of the prepaid card body 11, and 14 is a two-dimensional code in the initial code area 12. It is the amount information of, for example, "10000 yen" written first by. Reference numeral 15 indicates “100” written along the side 13 of the prepaid card body 11.
This is a number representing the amount of "00 yen".

Reference numeral 17 is a balance code area of value information in which information 18, 19, 20 and the like by a two-dimensional code indicating the balance held by the prepaid card in the process of using the prepaid card is written. 2 showing this balance
The information 18, 19 and 20 by the dimension code are sequentially written from the lower side of the prepaid card. 21 is the content of the information 18 indicating the balance written by the two-dimensional code "85
00 represents the number, 22 represents the content 19 of the information 19 indicating the balance written in the two-dimensional code, and 23 represents the content of the information 20 representing the balance written in the two-dimensional code. It is a number representing "0 yen".

24 and 25 are, when the balance is exhausted,
This pattern is an arbitrary pattern written in the margin portion 17a which is left in the margin in the conventional prepaid card, and in the present embodiment, it is a pattern constituted by the two-dimensional code which is all painted in solid black. Two
4 is written so that a part of it continues and overlaps with the amount information 14 of "10000 yen" which is first written by the two-dimensional code in the initial code area 12. 25 is, for example, "Thank you. , Etc., and the pattern 24 and the character 25 composed of these two-dimensional codes and the like are arbitrarily set, and are written in the blank portion when the balance is exhausted.

Conventionally, unauthorized modification of a prepaid card is
Modify the balance 0 column of the balance code area, or disconnect the initial code area of the prepaid card in which the high amount information is written, and connect directly to a part of the balance code area 17 of the low-value unused prepaid card. In many cases, fraud utilizing the blank space is performed, and since such prepaid card readers often do not detect the dimensional information of the prepaid card, it is difficult to detect the illegal alteration. On the other hand, in the prepaid card of the present embodiment, when the value information is lost, the pattern or characters composed of the two-dimensional code or the like is written in the margin portion of the balance code area when the value information is lost. No blank area is generated in the margin, and illegal use of the blank area can be prevented. Furthermore, since the patterns and characters are written in the initial code area 12 so as to be continuous with the amount information 14 of "10000 yen" that is first written by the two-dimensional code, the code data in the initial code area is destroyed and used. Disabling and if you use it, you can easily detect fraud.

[0014]

As described above, according to the present invention, an arbitrary pattern or character is written in the value information code area when the residual value is exhausted so that a blank portion is not generated and the arbitrary pattern or character is Since a part of the blank area is written over a part of the display pattern of the value information that is initially set and written in the initial code area, the blank area cannot be reused and the initial code area in the initial code area cannot be reused due to unauthorized modification. It is also possible to easily detect reuse, which has the effect of effectively preventing unauthorized modification.

[Brief description of drawings]

FIG. 1 is a plan view showing a prepaid card according to an embodiment of the present invention.

FIG. 2 is a plan view showing a conventional prepaid card.

FIG. 3 is a back view showing a prepaid card.

FIG. 4 is a sectional view of a prepaid card.

[Explanation of symbols]

 11 prepaid card body 12 initial code area 17 balance code area 24 patterns 25 characters

Claims (1)

[Claims] 1. An initial code area in which initial amount information initially set by advance payment is written along one side of a card by a two-dimensional graphic code and a number, and a balance in which a process of using the amount is written. In the method for preventing fraud of a prepaid card having a code area, the remaining code area is written in a first line along the other side of the card opposite to the initial code area, and sequentially written upward from the next line. When the remaining amount becomes 0, an arbitrary pattern such as a character or a picture is written in the blank area beyond that and a character or a picture is overwritten in the code of the initial code area. Prepaid card fraud prevention method.