IC card with individual authentication function
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United States of America Patent
Stats
-
Jan 19, 1993
Grant Date -
N/A
app pub date -
Apr 5, 1991
filing date -
May 21, 1990
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A pressure sensor for inputting finger characteristic data and an authenticity sensor for detecting whether a finger is authentic are arranged on the surface of an IC card. A finger can be placed on the pressure sensor and the authenticity sensor at the same time. Finger characteristic data is input by the pressure sensor. A controller calculates a sum signal from the input finger characteristic data, and collates the calculated sum signal with a reference sum signal of an owner of the card stored in a dictionary memory. An authenticity detecting circuit inputs data from the authenticity sensor, and detects whether a finger is authentic. If the finger is authentic and if a coincidence is determined between the calculated and reference sum signals, the use of the IC card is permitted.
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