Identification system for an article having individually attache

Details Identification system for an article having individually attache Identification system for an article having individually attache

1993-03-23

1995-08-15

Limanek, Robert P.

Optics: measuring and testing

Document pattern analysis or verification

250566, 235454, 235457, G06K 710, G06K 1900

Patent

active

054424330

ABSTRACT:
Each identification mark consisting of hologram or diffraction grating having a unique diffractive property which can be detected with optical identification means is formed on a seal, and, by affixing such seals as a combination and reading them, the analysis or forgery of each identification mark is made highly difficult. Since the possible modes of combination and the possible number of combinations can be freely and easily selected, high levels of expandability, identification power and handling facility can be achieved at a relatively low cost. This system can be applied to various articles such as information storage cards including magnetic cards, and keys. By using the system for verifying the authenticity of the article, an effective prevention of the counterfeiting of the article can be achieved.

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