Tamper resistant identification card
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 30, 1999
Grant Date -
N/A
app pub date -
Apr 3, 1998
filing date -
Apr 3, 1998
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A base layer of an information storage card is coated with a first coating layer that will glow a first color under longwave ultraviolet light. A second coating is applied onto the first coating. This second coating will glow a second color under ultraviolet light. This second coating can then be printed on using standard printing techniques. An attempt to alter the card by removing the printing will damage the first and second coating in a nonuniform manner. This damage will be seen under longwave ultraviolet light, even if the card has been reprinted.
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