JPS6274698A - Principal certification medium and principal confirming system - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides an identification medium on which identification information is recorded;
This article relates to an identity verification system that uses the identity verification medium.

[Prior Art] In corporate laboratories, it is necessary to restrict the number of people entering the laboratory in order to maintain corporate confidentiality. In addition, in database systems and the like, in order to maintain the confidentiality of information, it is necessary to prohibit access to specific information only by specific people.

In order to maintain such confidentiality, an ID card or the like with a magnetic stripe on which a password is recorded is used as identification information.

Similar media include ATM cards, Tallent cards, and bankbooks with magnetic stripes. Also,
There are also IC cards that have a password stored in their built-in ROM.

In an identity verification system using such an identity proofing medium, the password is read from a magnetic stripe or ROM and compared with a pre-registered password, or the user of the identity proving medium reads the password. The person's identity is verified by comparing it with a human-generated password.

[Problems to be Solved] Conventional identification media and identification systems using them have the following problems.

In an identity verification system that verifies a registered PIN, if the identity verification medium was issued in accordance with the +E regulations,
Even if someone other than the owner handles the identification medium, the identification will still be confirmed. The key is a human-powered password! 1 (1 go is 11°
In an identity verification system, if the identity card or clear medium is commercially available and the password is entered manually using the IE key, the identity of the person will be confirmed even if the identity verification medium is handled by someone other than the owner. .

In other words, a person who has fraudulently obtained a legitimate identity proofing medium, or a person who has fraudulently obtained a legitimate identity proofing medium and a PIN, can enter laboratories and databases in the same way as the owner of the identity proofing medium. System information can be accessed and cannot be kept confidential.

Furthermore, a password recorded on a magnetic stripe or a ROM can be read out relatively easily, and the security of the password itself is uncertain.

[Purpose of the Invention] The purpose of the present invention is to provide a new identification medium that can solve the problems of the prior art and reliably prevent theft by anyone other than the owner, and to provide an identification medium that uses such an identification medium. The purpose of the present invention is to provide an identity verification system that can perform reliable identity verification.

[Means for Solving the Problems] The identification medium of the specific invention in this application has a structure in which the owner's fingerprint is recorded on the surface of the base body.

In addition, the identity verification system of the related invention in this application is
A reading device that uses such an identification medium and optically reads the fingerprint recorded on the identification medium set at the medium setting position and the fingerprint of the finger set at the finger setting position; The device includes a verification device that determines whether the person who placed the finger is the owner of the identification medium by comparing each fingerprint read by the reading device with the phase σ.

[Operation] Even if the identification medium is used by someone other than the owner, the user's fingerprint will not match the fingerprint recorded on the identification medium, so the user will not be mistakenly identified as the user.

If a precise copy of the fingerprint recorded on the identification medium is prepared, it can be used for identification of the identification medium, but it is not easy to accurately reproduce the fingerprint of the identification medium by copying or the like.

Therefore, unauthorized use of the identification medium can be prevented, and reliable identification becomes possible.

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

FIG. 1 is a plan view of an ID card as an identification medium. In this figure, the ID card IO has an opaque plastic plate 12 as a base body, and a fingerprint 16 of a specific finger (for example, the index finger of the right hand) of the user of the ID card is recorded in a fingerprint recording section 14 on the surface of the ID card 10. , recorded as a concavo-convex pattern. At least the fingerprint recording section 16 is covered with a transparent protective film and has a smooth surface.

Such recording of the fingerprint 16 can be performed using a known printing technique.

Here, the fingerprint can also be recorded as an IO light pattern. However, if a fingerprint is recorded as a concavo-convex pattern instead of a shading pattern as in this embodiment, it becomes extremely difficult to decipher it with the naked eye, and it becomes almost impossible to reproduce it with a copying machine. In addition, if the uneven pattern of the fingerprint is left exposed, there is a risk that the fingerprint will be duplicated by making a mold, but if it is coated with a protective film to make it a smooth surface as in this example, it can be removed. Such duplication can be prevented.

FIG. 2 is a schematic diagram of an identity verification system that uses the ID card 10. In this diagram, the identity verification system 2
0 is composed of a reading device 22 and a collation device 24.

The reading device 22 consists of two photoelectric conversion systems. - The photoelectric conversion system on the side is for optically reading the fingerprint recorded on the ID card 10 set at the position shown (medium setting position), and if) the fingerprint recording section of the card 10. 14 is illuminated with light &C 26A, and an optical image of the fingerprint recording unit 14 is captured by a two-dimensional image sensor 3OA via a lens 28A. The external photoelectric conversion system is used to optically read the fingerprint of the L finger 32 set at the position shown (double/finger set position), and the fingerprint of the Y finger 32 is read by the light source 26B! ! (First, the optical image of the finger 32 is captured by the two-dimensional image sensor 30B through the lens 28B. The two-dimensional image sensors 30A and 30B output black and white binary image data.

The verification device 24 determines whether the person who set the finger 32 is the owner of the IC card 10 by comparing the fingerprint of the ID card 10 read by the reading device 22 with the fingerprint of the finger 32. be. This verification device 24 is a memory 34A.

It is composed of a 34B1 verification processing section 36, a comparator 38, and a determination threshold setting device 40.

One memory 34A is for temporarily storing image data (fingerprint image read from the ID card 10) output from the two-dimensional image sensor 34A. The other memory 34B is a two-dimensional image sensor 34
This is for temporarily storing the image data output from B (fingerprint image read from 1,000 rM32).

The verification processing unit 36 moves and rotates the fingerprint image on the memo 134B, superimposes the fingerprint image on the fingerprint image on the memory 34A, and then compares and verifies both fingerprint images. and outputs the degree of comparison (degree of match). Such superimposition processing and comparison/verification processing may be performed using known pattern matching techniques, so the details thereof will not be described. Further, the verification processing section 36 is realized by a dedicated electronic circuit or a general-purpose microprocessor.

The comparator 38 compares the comparison degree data inputted from the verification processing unit 36 with the determination threshold data set by the determination threshold value setter 40, and when the comparison degree exceeds the determination threshold value, sends an identity verification signal. This outputs the following. When this personal identification system 20 is applied to a door opening/closing system in a laboratory, for example, the output of the comparator 38 can be used to control door opening/closing, so that the door can be opened when the personal identification signal is generated.

In such an identity verification system 20, (1) When the card IO is set in the medium setting position and the owner of the ID card 10 sets a specific finger (for example, the index finger) in the finger setting position, Since the fingerprint images read by the reading device 22 are the same, the comparison processing unit 36 outputs a degree of comparison that exceeds the determination threshold. Therefore, the comparator 38 determines that the person is the real person, and an identity confirmation signal is output.

If a person other than the owner of the ID card 10 sets a finger, the degree of comparison of the fingerprint images will be smaller than the determination threshold, so the identity of the person will not be determined and the identity confirmation message i) will not be issued.

Here, 11) If the fingerprint recorded on the card IO is precisely duplicated and placed in place of the L finger, the card will be mistakenly determined to be the real person. However, as mentioned above, ■1]
Since it is extremely difficult to duplicate the fingerprint recorded on the card 10, it is possible to prevent such an ID card from being used in the city, and to ensure the identity of the user.

Although the embodiments have been described above, the present invention can be implemented with appropriate modifications.

For example, the form of the identification medium of the present invention is not limited to a card shape, but may also be a sheet shape, a bar shape, or the like.

Naturally, the identification medium of the present invention can be realized not only as a medium for personal identification, like the ID card of the above embodiment, but also as a cash card, credit card, deposit card, etc. equipped with a magnetic stripe, IC memory, etc. It can also be realized as a transaction medium such as a passbook.

The reading section of the personal identification system may be configured such that the photoelectric conversion system of the 1 system is used for both reading the fingerprints of the personal identification medium and the fingerprints of the fingers. in this case,
The medium setting position and the L finger center/throat position can be made to be the same position.

[Effects of the Invention] As explained above, the identification medium of the specific invention in this application has the fingerprint of the owner recorded on the surface of the base body, and also The verification system utilizes such an identification medium, and optically scans the fingerprint recorded on the identification medium set at the medium setting position and the fingerprint of the finger set at the hand position. It consists of a reading device that reads the fingerprint, and a verification device that determines whether the person who placed the finger is the owner of the identification medium by comparing the fingerprints read by the reading device with each other. Because of this, the effects of preventing unauthorized use of the identification medium and enabling reliable identification can be achieved.

[Brief explanation of drawings]

FIG. 1 is a schematic plan view showing an ID card as an example of an identification medium of the present invention, and FIG. 2 is a schematic diagram of an example of an identification system according to the invention that uses the ID card. 10... ID card (identification medium), 12... plastic plate (base body), 14... fingerprint, 16...
・Fingerprint recording unit, 20...Personal verification system, 22...
-Reading device, 24... verification device.

Claims (6)

[Claims] (1) An identification medium characterized by having the owner's fingerprint recorded on the surface of the base body. (2) The identification medium according to claim 1, wherein the fingerprint is recorded as a concavo-convex pattern. (3) The identification medium according to claim 2, wherein the uneven pattern of the fingerprint is covered with a transparent protective film, and the surface of the protective film is smooth. (4) An identification system that uses an identification medium with the owner's fingerprint recorded on the surface of the base body, the fingerprint recorded on the identification medium set in the medium setting position and the finger setting position. A reading device optically reads the fingerprint of the set finger, and by comparing each fingerprint read by this reading device, the person who set the finger is the owner of the set identification medium. An identity verification system comprising a verification device that determines whether a person is a person. (5) The reading device includes a first photoelectric conversion system for reading the fingerprint of the identification medium set at the medium setting position, and a second photoelectric conversion system for reading the fingerprint of the finger set at the hand setting position. An identity verification system according to claim 4, characterized in that the system comprises: (6) The personal identification system according to claim 4, wherein the reading device is configured so that one photoelectric conversion system is used in common for reading the fingerprints of the personal identification medium and the fingerprints of the fingers.