System for testing the authenticity of a data carrier
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United States of America Patent
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Jun 29, 1999
Grant Date -
N/A
app pub date -
Sep 20, 1995
filing date -
Dec 23, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A system for testing the authenticity of a data carrier determines the physical property of the data carrier from an irreversibly adjustable electric state of a circuit present separately on the integrated circuit, and uses the electric property of the circuit for establishing a characteristic value for the data carrier.
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