Token having a predetermined optical characteristic, and a token validation device for use therewith
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United States of America Patent
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-
Sep 10, 1991
Grant Date -
N/A
app pub date -
Jan 19, 1989
filing date -
Jan 19, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A token having predetermined optical characteristics can be tested by a token validation device that subjects the token to optical testing to determine the presence or absence of the predetermined optical characteristics. A single token can include a plurality of different predetermined optical characteristics to increase its coding content.
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