Tamper resistant identification card

Details Tamper resistant identification card Tamper resistant identification card

1998-04-03

1999-11-30

Fridie, Jr., Willmon

Printed matter

Having revealable concealed information, fraud preventer or...

Utilizing electromagnetic radiation

283 74, 283904, 382116, B42D 1500

Patent

active

059928913

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.

REFERENCES:
patent: 3640009 (1972-02-01), Komiyama
patent: 4881217 (1989-11-01), Ohki
patent: 5346258 (1994-09-01), Behm et al.
patent: 5401960 (1995-03-01), Fisum et al.
patent: 5403039 (1995-04-01), Borowski, Jr. et al.
patent: 5862247 (1999-01-01), Fisum et al.

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