Verification system for document substance and content

Details Verification system for document substance and content Verification system for document substance and content

1984-12-31

1986-02-04

Yusko, Donald J.

Communications: electrical

Continuously variable indicating

With meter reading

235380, 235487, H04Q 900, G06K 500

Patent

active

045689369

ABSTRACT:
An authenticator device, e.g. card, of verifiable composition substance and informational content with a system of production and verification. Character uniqueness signals identifying the composition of the device are recorded on the card in an encrypted form combined with statistical data signals representative of information on the card. Testing the card involves freshly sensing the character uniqueness data and entering the statistical data. Such fresh data is then compared with the recorded values after decoding. Favorable comparisons manifest approval and enter the statistical data for processing.

REFERENCES:
patent: 4034211 (1977-07-01), Horst et al.
patent: 4094462 (1978-06-01), Moschner
patent: 4442345 (1984-04-01), Mollier et al.
patent: 4469937 (1984-09-01), Stockburger et al.
patent: 4476468 (1984-10-01), Goldman

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