JPH0747792A - Card and method of determining genuieness and spuriousness of card - Google Patents

Abstract

PURPOSE:To easily and reliably determine genuineness or spuriousness of a card and make forgery and like impossible by providing a writable and readable data recording medium and countable patterns in the card. CONSTITUTION:Random patterns 4 which have a certain width and extend are arranged in a region of a card 1 and, by setting a certain width or a predetermined width narrower than that, a counting starting position x1 of the random patterns 4, a counting terminal position y1 thereof and a counted value of the patterns existing in the set width between both the positions are recorded on a data recording medium 3. According to the counting starting position x1 of the recorded random pattern, the counting terminal position y1 thereof and the data in the set width, the patterns are counted, and the value thus counted is compared with the counted value recorded on the recording medium 3 to determine genuineness or spuriousness of the card 1. As a result, genuineness or spuriousness can be easily and reliably determined, and forgery and the like are made impossible.

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 method.

[0002]

2. Description of the Related Art A card of the present invention is an ID card (Ide
identification cards such as an authentication card) and a CD card (Cash Dispenser Card), and other tickets, cards such as ticket, betting ticket, lottery ticket, boarding ticket, boarding ticket, gift certificate, certificate, etc. that dislike counterfeiting or imitation. It is a kind.

In recent years, ID cards and CD cards have been widely distributed, and cash vouchers and certificates (cards) have also become popular, but the problem always lies in counterfeiting, imitation, diversion of other people's cards, etc. Is. Therefore, a systematic method such as PIN checking is adopted for checking the cardholder's recognition.

[0004]

However, there is no absolute discriminating means for the authenticity of the card itself, and it is the actual situation that the card is merely trying to enhance the preventive effect against forgery by giving difficult decoration.

The present invention is intended to solve the above problems, and an object of the present invention is to provide a card and a card authenticity judging method capable of easily and surely making authenticity judgment and making counterfeiting impossible. And

[0006]

The card of the present invention comprises a writable and readable information recording medium and a countable pattern.

The information recording medium is a magnetic recording medium (magnetic material,
For example, magnetic tape, MICR, etc.), optical recording material (optical recording material such as thin film for laser recording, bar code, etc.),
A semiconductor recording material (semiconductor material, for example, semiconductor memory, optical memory, etc.) and other materials capable of writing and reading information.

The countable irregular pattern is composed of a large number of straight lines, curves, points, etc., and can be easily detected by an optical detection device in an arbitrary region of the visible wide area, infrared wide area, and ultraviolet wide area, In addition, it is a countable pattern (hereinafter, simply referred to as "pattern"), and can be easily formed on the card substrate surface by printing, photography, copying, drawing marking or other means. This pattern includes a regular array pattern and an irregular array pattern, both of which can be used depending on the situation, but the irregular array is preferable from the viewpoint of forgery.

The card targeted by the present invention must always have the above-described information recording body and pattern in the same card.

[0010]

The principle of authenticity determination of the card of the present invention is based on the following outline.

When counting the patterns existing in the card, if the counting is started from the edge of the card or from the defined counting start position, even if the patterns are regularly arranged at equal pitches, if the counting distance is changed. The count value is different.
In this case, if the count distance is set arbitrarily, the count value of individual cards will be different, but setting the arbitrary distance within the limited size of the card is practically considered when considering many cards. There is also a limit. If the pattern pitch is coarse, the probability of showing the same count value among a large number of cards becomes high even if an arbitrary distance is set. On the other hand, if the pitch is made fine, the probability will naturally decrease. However, no matter how fine the pitch of the pattern is, if the counting start position is the same and only the counting distance is changed, there is a limit in reducing the probability of showing the same counting value. That is, it is difficult to make an individual card among a large number of cards self-recognize with only one variable (counting distance) and to be sure that it is not the same as the others.

On the other hand, if the counting start position is arbitrarily recognized for each individual card, and if this information is also used for self-recognition, there will be two variables in the card, and the probability of showing the identity will be significantly reduced ( Affects almost exponentially),
Even if the same count value is shown, if the count start position information is different, it means that the cards are different.

From the above, it is possible to easily increase the number of variables. This is to use a random pitch pattern rather than an equal pitch pattern, and this irregularity also becomes a unique feature of individual cards, extending the range of card individuality. In this case, each individual card has three types of count start position, count end position, and random pitch pattern, which are peculiar to each card, so that the count value depends on three variables. That is, one card can use the count start position, count end position, and count value prerecorded in the information recording body as data for authenticity determination to determine the validity.

Generally, these three variables are randomly selected according to a random number table and set at the time of card manufacturing, so that it is practically impossible to intentionally copy them. This meaning indicates that it has a function that makes counterfeiting impossible.

Further, if a random pattern is arranged in a card area extending with a certain width, a predetermined width which is equal to or smaller than this width is set, and patterns existing within the set width are counted. The count value also changes depending on the width. Therefore, it is also possible to record the count start position, the count end position of the random pattern and the pattern count value existing within the width set between both positions and use it as the data for authenticity determination.

According to the present invention, based on the above principle, a unique variable is recorded in an information recording body of a card, the information is read to count individual cards, and the count value and the count value recorded in advance are recorded. By comparing and, we recognize the legitimacy of this card and, together, make it impossible to forge.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail below with reference to the drawings.

FIG. 1 is a plan view of a card 1 according to the present invention, which is constructed by forming an information recording body 3 and a pattern 4 on a card substrate 2 made of vinyl chloride resin, polyester resin, other synthetic resin, paper or the like. Has been done. Information recording body 3
For this, magnetic materials are most often used. In this information recording body 3, personal names, store names, company names, affiliation names, place names, merchandise property names, various classification codes, characters, numbers, etc., which are coded and recorded in the magnetic recording unit of a normal magnetic card, are recorded. In addition, counting start position x ₁ of pattern 4, counting end position y ₁ ,
And the pattern count between x ₁ and y ₁ is recorded.
This pattern 4 is assumed to be a bar having a random pitch in this embodiment. This bar is generally formed by a printing method, but it may be formed at the time of card issuance by an impact or non-impact recording method, and the line width of the bar is 0.00.
It is 5 mm to 0.5 mm. Further, the pitch of the pattern follows a random number (hereinafter referred to as “Z ₁ ”).

A known photoelectric counter is used for counting the bars, and the bars are counted from the counting start position x ₁ recorded on the information recording body 3. Counting is the counting end position y
_The number of bars between x _{1 and} y ₁ , that is, the count value becomes the unique number of this card.

As described above, the values of x ₁ and y ₁ are recorded in the information recording medium in advance, and the photoelectric counting device is controlled to read this and count the number of bars between x _{1 and} y _1. It This count value is recorded in the same way as x ₁ and y ₁ when the card is issued,
This card is checked by the terminal card checker, and the value counted by the card checker is compared with the count value recorded in advance in the information recording body 3, and if they are the same, it is determined that the card is valid.

X ₁ , y ₁ and random number Z in other cards
_When the indices corresponding to ₁ are x _i , y _i and Z _i (i is an arbitrary numerical value), these values are generally x ₁ ,
It is different from the values of y ₁ and Z ₁ .

If the two cards have x ₁ and y ₁ values and x
_When the values of ₂ and y ₂ are very close to each other, almost the same count values are shown if the pitches of the bars recorded in the card are evenly spaced. The same applies when the patterns are printed in the same pattern even at random pitches. However, many kinds of random pitch patterns can be plate-formed on a large-area printing plate during mass production, and different kinds of patterns can be prepared for different plates, so that the production quantity of the same pattern can be limited. On the other hand, even when printed from the same plate, when cutting out into small pieces as a card (defeat), a slightly different deviating position results in a completely different pattern. The smaller the pattern is, the more difficult it is to cut out the same pattern within the precision of the machine.

In the impact and non-impact recording method, when patterns are formed at the time of card issuance, since individual cards are processed in a completely random number, there is almost no probability that the same pattern will occur.

In the case of the random pitch pattern thus recorded at random, the count values are generally different even at x ₁ , y ₁ ≉x ₂ , y ₂ , so that the independence of the card can be maintained.

If the x ₁ , y ₁ card and the x ₂ , y ₂ card happen to show the same count value by chance (this case is relatively possible), x ₁ ≠ y ₁ , x ₂ ≠ y ₂ Therefore, they are distinguished by this information difference.

As described above, there are three kinds of numerical values determined for each card, that is, the count value of the random pattern defined by the counting start position x ₁ , the counting end position y ₁ and Z ₁ . It is extremely unlikely that two cards will have the same three variables at the same time.
It will be very close to zero.

Therefore, if x ₁ , y ₁ , and bar count values are recorded in advance in the card, there will be no other card having the same three pieces of information, and the values are peculiar to that card. , Is completely distinguishable from other cards.

On the other hand, when this card is counterfeited or imitated, even if the magnetic recording signal can be decoded and recorded in the information recording body of the counterfeit card, a countable irregular pitch pattern is accurately formed on the counterfeit card. Is extremely difficult.

That is, even if the shape and pitch of the pattern are accurately reproduced, the relative position of the pattern and the card, that is,
Accurate alignment of the end face of the card and the counting start position and the counting end position of the pattern with the real card is extremely difficult with the current technology.

If the pattern position of the counterfeit card is different from the counting start position and the counting end position, even if the x _i and y _i recorded on the true card are deciphered, it becomes essentially meaningless. Therefore, it is virtually impossible to forge or imitate this card.

Although FIG. 2 is an enlarged view of the pattern used in the present invention, the present invention is not limited thereto. FIG. 2A shows a pattern having a curved structure, and the number of times the optical detection device cuts the pattern is counted. FIG. 2B is a pattern of point configuration, and it is also possible to count points at predetermined positions with a predetermined width a. Similarly, FIG. 2C shows a pattern composed of intersecting diagonal lines having an arbitrary pitch, and the intersections of the intersecting diagonal lines may be counted with the predetermined width b as in FIG. 2B.

[0032]

Since the card of the present invention has a countable random pattern formed on the card base material, it is very difficult to forge and imitate, and the authenticity of the card of the present invention is determined in advance by the random pattern. The counting start position, the counting end position, the width for counting the pattern, and the count value are recorded on the information recording body of the card, the pattern is counted according to the count position information, and the count value obtained as a result and the information recording body are recorded. Since the calculated count values are compared to each other, the authenticity of the card can be surely and easily determined without obtaining information from other than the card.

[Brief description of drawings]

FIG. 1 is a plan view of a card targeted by the present invention.

FIG. 2 is a diagram showing an example of a pattern used in the present invention.

[Explanation of symbols]

1 ... Card, 2 ... Card substrate, 3 ... Information recording body, 4 ... Pattern.

Claims (6)

[Claims] 1. A random pattern arranged in an area extending with a certain width, and a count start position, a count end position of the pattern, and a predetermined width narrower than the predetermined width between the positions. A card provided with an information recording body on which a pattern count value is recorded. 2. A random pattern counting start position for arranging a random pattern in a card area extending with a certain width to set a predetermined width or a predetermined width narrower than the certain width.
The pattern count value existing within the set width between the count end position and both positions is recorded, and the pattern is counted according to the information of the count start position, count end position and the set width of the recorded random pattern. Then, the authenticity of the card is judged by comparing the counted value with the recorded counted value to judge the authenticity of the card. 3. A random pattern counting start position for arranging a random pattern in a card area extending with a certain width to set the certain width or a predetermined width narrower than the certain width.
The pattern count value existing within the set width between the count end position and both positions is recorded, and the pattern is counted according to the information of the count start position, count end position and the set width of the recorded random pattern. Then, the authenticity of the card is determined based on the counted value, the counting start position and the counting end position information, and the set predetermined width information. 4. The card authenticity determination method according to claim 2, wherein the pattern is a curved pattern. 5. The authenticity determination method for a card according to claim 2, wherein the pattern is a dot configuration pattern. 6. The pattern according to claim 2, wherein the pattern is composed of diagonal lines intersecting at an arbitrary pitch.
Alternatively, the card authenticity determination method described in 3 above.