Individual discrimination card

Details Individual discrimination card Individual discrimination card

1985-03-21

1987-03-17

Pitts, Harold I.

Registers

Systems controlled by data bearing records

Credit or identification card systems

235381, G06K 500

Patent

active

046509801

ABSTRACT:
An individual discrimination card in accordance with the present invention includes a memory for memorizing the data which represents the frequency of erroneous input of a secret code data. The erroneous input frequency data comprises a first data and a second data. The individual discrimination card judges whether or not a secret code data is an erroneous input, and includes as well a microprocessor which lets the memory unit to memorize the first data when the secret code data is an erroneous input, while lets the first data in the memory unit to be rewritten to the second data when the secret code data is a legitimate one.

REFERENCES:
patent: 4549663 (1986-06-01), Nagata

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