JPH0655553B2 - Magnetic card - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a magnetic card having a novel structure in which forgery / alteration is extremely difficult and a magnetic card determination method.

(Prior Art) In the conventional magnetic card, since the structure of the magnetic recording layer can be easily analyzed and decoded by a magnetic scope or a magnetic developer, there is a drawback that a forged or altered magnetic card is easily manufactured. there were. Therefore, when a fee storage system using a magnetic card is constructed, once a counterfeit or altered card appears, the fee storage system may lose credibility and the entire system may collapse. Effective prevention has existed as a serious problem to be urgently solved for a fee storage system using a magnetic card.

(Problems to be Solved by the Invention) The present invention was created as a result of careful consideration in view of the above points. A magnetic layer is provided on a part or the whole of a base, and a part of the magnetic layer is used as a data track. In the magnetic card described above, a security track composed of a large number of security code conductors is provided in close contact with the magnetic layer of the base surface, and the security track can be read separately from the reading and writing of the data track, and the security code can be read. This makes it possible to determine the authenticity of the magnetic card and to form various code patterns of the security code. Therefore, forgery and alteration of the magnetic card becomes extremely difficult, and a fee storage system using the magnetic card can be constructed with confidence. It is an object of the present invention to provide a structure of a magnetic recording layer that can be formed.

(Means for Solving the Problem) A first gist of the present invention is to provide a large number of security code conductors in a magnetic card in which a magnetic layer is provided on a part or the whole of a base and a part of the magnetic layer is a data track. The present invention resides in a magnetic card characterized in that a security track made of is provided in close contact with the magnetic layer on the base surface.

The security track may be provided on the data track, or may be provided in close contact with the magnetic layer on the base surface other than the data track surface.

There is no special limit on the number of security trucks installed,
It may be one or plural. If a dummy track made up of a large number of dummy code conductors is provided in addition to the security track, it becomes even more difficult for a third party to decipher the magnetic recording layer, which is extremely effective in preventing forgery / alteration.

It is also possible to combine the security track and the dummy track randomly and continuously to make it impossible to determine which part is the security track.

It is also possible to form the conductor as a letter and / or a figure, and use a part of the letter and / or figure as a security track.

Providing an azimuth angle on the data track has the advantage that data can be read only by a card reader / writer with the same azimuth angle.

If an azimuth angle is provided on the security track, there is an advantage that only the card reader / writer with the same azimuth angle can read the security information.

(Embodiment) An embodiment of the present invention will be described below with reference to the accompanying drawings.

In the figure, 2 is a magnetic card according to the present invention. The magnetic card 2 has a base 4 made of polyester, plastic such as polyvinyl chloride, or paper. A magnetic layer 5 is provided on the entire one surface of the base 4. A data track 6 for recording information is formed on a part of the magnetic layer 5. Reference numeral 8 denotes a security cord conductor having a predetermined shape and being closely attached to the magnetic layer 5 at a predetermined interval. The security code conductor 8
Security track 10 by arranging a large number of
Is configured. The security track 10 may be installed on the data track 6 or on the magnetic layer 5 other than the data track 6. In FIG. 1, the security track 10 is provided on the data track 6. It is shown. 12 is the magnetic layer 5 and the security track 1.
It is a non-magnetic and non-conductive mask layer that covers 0. If the mask layer 12 is made of an opaque ink or film, the structure of the security track of the magnetic card 2 cannot be seen even from the outside. As the conductor used for the security code conductor 8, any conductor can be used as long as it can be closely attached to the surface of the magnetic layer 5, and for example, metal, carbon or the like can be used. .

As shown in FIG. 7 and FIG. 8, the structure of the card reader / writer R in the case of constructing a fee storage system or the like using the magnetic card 2 having such a magnetic recording layer, as shown in FIG. 7 and FIG. It is necessary to install the conductor read head 13 including the electrodes E and E of FIG.

When the magnetic card 2 is inserted into the card reader / writer R, first, the security track 10 composed of a large number of security code conductors 8 becomes the conductor read head 13.
Security cord conductor 8 by approaching
, The code pattern of the security track 10 is read. If the read code pattern of the security track 10 matches a preset code pattern, the magnetic card 2 is conveyed into the card reader / writer R, the data track 6 is read and written, and then the magnetic card 2 is discharged. On the other hand, the conductor reading head 13
If the code pattern of the security track 10 read in step 3 is different from the preset code pattern,
Since the magnetic card is forged or altered, it is sent back or conveyed as it is and refused to be inserted. In this way, unless a magnetic card with the exact same security track structure is created (this is impossible unless you have the magnetic card manufacturing equipment), normal use cannot be performed. There is almost no danger that the card will be used.

In the above embodiment, the case where one security track 10 is provided has been described, but a plurality of security tracks 10 may be provided, and in this case, the code pattern becomes more diverse and the reading means for obtaining the mutual relation between the patterns. Since it can be used, it is more difficult to forge and alter (Fig. 4).

Also, an example in which the security track 10 is installed to diversify the code pattern to prevent forgery / alteration is shown. However, in addition to the security track 10, a dummy track 16 including a large number of dummy code conductors may be provided. Since it is not known which is the dummy track 16 and which is the security track 10, the effect is further enhanced in terms of preventing forgery and alteration (FIGS. 5 and 6). Like the security track 10, the dummy track 16 is made of a conductor, but is not a target to be read by the conductor reading head 13. When the dummy track 16 is not used, the pattern of the security track 10 can be known by peeling off the mask layer. However, even if the pattern is known due to the existence of the dummy track 16, it is possible to know which part is the security track. Disappear.

If a plurality of security tracks 10 are provided in this way, a means for reading the mutual relationship of the patterns can be provided, so that the width that follows the card transport speed is widened and the speed change becomes strong, and reading errors can be prevented. We do not know the third party or thing to by any interrelated and logical expression which track and which track order-taking is various interrelationships of each track,
There is an advantage that the density of the security code can be increased.

In the example shown in FIGS. 1 to 6, the azimuth angle is not provided for any of the data track 6, the security track 10 and the dummy track 16. However, for example, as shown in FIG. If the data track 6 is provided, there is an advantage that only the card reader / writer having the same azimuth angle can read the data track. Further, as shown in the figure, if the security track 10 having an azimuth angle is provided, there is an advantage that the security track can be read only by a card reader / writer having the same azimuth angle. Further, the dummy track 22 can also be provided with an azimuth angle.

The security track 10 and the dummy track 16 do not need to be clearly track-shaped, and, for example, as shown in FIG. 10, the security track 10 and the dummy track 16 are randomly arranged and continuously designed and combined. In addition, the width of the dummy track 16 can be changed variously so that it is not possible to know which part is the security track 10. Also, as shown in FIG.
The conductor may be characters or figures, and a part of the conductor may be the security track 10. By doing so, the company name, the company mark, etc. can be displayed. Also,
These character and graphic parts can be covered with an opaque or transparent mask. When the mask is not used, it is judged as a meaningful character figure at first glance, and it is difficult to understand the magnetic pattern. In the case of masking, it is effective to make it difficult to see that there is a magnetic pattern by embossing a character graphic as a change in thickness or by intentionally coloring that part. Further, it is possible to perform covering printing in conformity with the lower character graphic to display the character graphic more clearly.

When multiple security tracks are installed, the method of judging the mutual relationship between them is to read the other data by using one as a clock track, or input one track information and the other track information into a logical expression or logic circuit. Then, the method of obtaining the result and the method of encoding them can be adopted.

For example, as shown in FIG. 12, when there are a track A and a track B, there is a method of determining whether or not the track B is present at the rising edge of the track A, or the track B is present at the falling edge of the track A. There is a method of determining the data, a method of ANDing the track A and the track B and applying them to a correct logical expression to determine whether or not the card is a normal magnetic card. The advantages of forming the security cord of the present invention with a conductor are as follows.

The extension of printing technology has an advantage that it cannot be easily re-formed, and especially when a high technology such as vapor deposition is applied, there is an advantage that tampering after manufacturing becomes extremely difficult.

The conductor is resistant to solvents and difficult to remove with solvents.
There is an advantage that tampering such as application and pasting is difficult due to the effect of adhesion, and physical deletion is difficult due to the effect of adhesion.

Since it is a non-magnetic material, even if it is formed on the data track between the magnetic head and the magnetic layer, if it is provided in close contact, there is an advantage that reading and writing of magnetic data of the magnetic layer is not affected.

The above-mentioned magnetic material detecting means is limited to the magnetic head, whereas the conductor detecting means has various advantages.

Since the conductor does not need to have a thickness to secure its characteristics, it can be formed sufficiently thin, and if the protective layer is colored, there is an advantage that its position cannot be visually identified.

Further, the advantages of the close contact between the magnetic layer and the security cord conductor in the present invention are as follows.

Since the present invention uses a conductor, it can be formed sufficiently thin so as not to affect the reading and writing of data in the magnetic layer when it is formed in close contact with the magnetic layer, but cannot be thinned with a magnetic material.

Since the characteristics of the magnetic head deteriorate rapidly as the distance from the magnetic layer increases, the magnetic head must be sufficiently close to the magnetic layer in order to read and write data correctly.

In the present invention, the conductor is adhered to the magnetic layer,
In addition, since the protective layer is usually coated on top of this, if the thickness of the protective layer is set appropriately, even if a person who attempts tampering attempts to tamper by pasting a conductive material on the protective layer,
The sticking increases the thickness, making it impossible to read and write the data in the magnetic layer accurately.

Further, the attachment of the conductor after the manufacturing process causes a step on the surface to affect the reading and writing of the magnetic head, and
Since it is possible to visually check the tampering state, it is possible to prevent the conductor from being attached.

Those who try to peel or remove the conductor try physical abrasion, but since the conductor is in close contact with the magnetic layer, if it tries to damage the conductor, it also damages the magnetic layer. It cannot be removed and cannot be tampered with. Even if the conductor is forcibly peeled and removed, the magnetic layer is also peeled and removed at the same time, so that the fact of tampering is immediately revealed by reading with the magnetic head.

(Effects of the Invention) As described above, according to the present invention, in a magnetic card in which a magnetic layer is provided on a part or the whole of a base and a part of the magnetic layer is a data track, a security track including a large number of security code conductors is used. Is provided in close contact with the magnetic layer of the base surface, the security track can be read separately from the reading and writing of the data track, and the security code is read to determine the authenticity of the magnetic card. Since it is possible to form various code patterns of the security code, it is extremely difficult to forge and alter the magnetic card, and it is possible to construct a fee storage system using the magnetic card with a great effect.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view showing an example of a magnetic card having a magnetic recording layer of the present invention, FIG. 2 is a top view of the same as above, and FIG. 3 is an explanatory view showing the mechanism of a card reader / writer for the above magnetic card, FIG. 4 is a top view showing another example of the magnetic card having the magnetic recording layer of the present invention, and FIG. 5 is a top view showing still another example of the magnetic card having the magnetic recording layer of the present invention and FIGS. Is a top view showing still another example of a magnetic card having a magnetic recording layer of the present invention, FIGS. 7 and 8 are explanatory views of a reading head for reading a conductor, and FIG. 7 is a side explanatory view. FIG. 8 is a front view, FIG. 9 is a drawing showing the surface of a magnetic card of another embodiment, FIG. 10 is a drawing showing a security track and a dummy track of a magnetic card of another embodiment, and FIG. Is a magnetic card security tiger of yet another embodiment. Drawings and FIG. 12 shows the click and dummy tracks are explanatory views showing an example of a method of reading the interrelationship of multiple security track. 2 ... Magnetic card, 4 ... Base, 5 ... Magnetic layer, 6 ...
… Data track, 8… Security code conductor,
10 ... Security track, 12 ... Mask layer, 1
3 ... Conductor read head, 14 ... Dummy code Conductor, 16 ... Dummy code.

Claims (12)

[Claims] 1. In a magnetic card in which a magnetic layer is provided on a part or the whole of a base and a part of the magnetic layer is a data track, a security track composed of a large number of security code conductors is adhered to the magnetic layer on the base surface. A magnetic card characterized by being provided. 2. The magnetic card according to claim 1, wherein the security track is provided on the data track. 3. The magnetic card according to claim 1, wherein the security track is provided on a portion other than the data track surface. 4. A magnetic card according to any one of claims 1 to 3, wherein one security track is provided. 5. The magnetic card according to any one of claims 1 to 3, wherein a plurality of the security tracks are provided. 6. The magnetic card according to claim 1, wherein the data track is provided with an azimuth angle. 7. The magnetic card according to any one of claims 1 to 6, wherein the security track is provided with an azimuth angle. 8. In a magnetic card in which a magnetic layer is provided on a part or the whole of a base and a part of the magnetic layer is a data track, a security track composed of a large number of security code conductors is adhered to the magnetic layer on the base surface. I will set it up,
In addition to the security track, a magnetic card comprising a number of dummy tracks made of a large number of dummy code conductors. 9. The magnetic card according to claim 8, wherein the security track and the dummy track are randomly and continuously connected so that it is impossible to determine which part is the security track. 10. The magnetic card according to claim 8, wherein the security track and the dummy track are formed as characters and / or figures. 11. The magnetic card according to claim 8, wherein the data track is provided with an azimuth angle. 12. The security track is provided with an azimuth angle, and the security track is provided with the azimuth angle.
The magnetic card according to claim 1.