Individual discrimination card
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United States of America Patent
Stats
-
Mar 17, 1987
Grant Date -
N/A
app pub date -
Mar 21, 1985
filing date -
Apr 2, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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Family
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