Magnetic recording medium authentication method, magnetic recording medium authentication system, and authenticable magnetic recording medium

Abstract

Disclosed is a method of authenticating a magnetic recording medium, capable of immediately detecting unauthorized use of a magnetic recording medium by a stranger other than an owner of the magnetic recording medium, and maintaining a degree of compatibility with conventional magnetic recording mediums. In this method, a physical pattern is formed in a recording region adapted to magnetically record basic information thereon, so as to change a magnetic property of the recording region to an extent allowing the basic information to be read from and / or written in the recording region. On the occasion of authentication of the magnetic recording medium, a magnetic characteristic induced by the physical pattern is read from the recording region to generate authentication information in accordance with the magnetic characteristic. Then, the magnetic recording medium is authenticated in accordance with the authentication information. When the basic information on the magnetic recording medium formed with the physical pattern is duly rewritten, new authentication information is re-generated to authenticate the rewritten magnetic recording medium in accordance with the new authentication information.Magnetic card authentication means capable of immediately detecting an unauthorized use or an authorized rewrite of recorded content by a person other than the authorized person and maintaining compatibility with a conventional magnetic card to a certain extent. For this, physical pattern formation is performed by forming a physical pattern in a recording area for changing magnetic characteristic of the recording area within a range enabling read and / or write of basic information magnetically recorded in the recording area. Upon authentication, magnetic characteristic based on the physical pattern is read out from the magnetic recording area. According to this, authentication information is generated and according to the authentication information.

Description

technical field [0001] The invention relates to an authentication method for magnetic recording media, an authentication system for magnetic recording media, and an authenticated magnetic recording medium. It is not only suitable for read-only magnetic cards that do not rewrite magnetic information, but also suitable for rewriting magnetic information. magnetic card. Background technique [0002] In recent years, various magnetic cards, such as credit cards, prepaid cards, cash cards, point cards, etc., in which personal information and amount information are recorded have been widely used. Illegal use of these cards due to forgery or alteration has become a major social problem, and solutions are currently being sought. In a magnetic card with information recorded on a magnetic body, since it is necessary to read / write information in an environment where the mechanism precision of the read / write device (reader / writer) is low, the On the basis that the amount of informatio...

AI Technical Summary

Problems solved by technology

[0004] However, the above-mentioned technology is not compatible with the magnetic cards that have been popularized so far in terms of manufacturing methods and uses, so it cannot be used on the infrastructure that has been popularized so far.

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