Method and apparatus for high security crypto-marking for protec

Details Method and apparatus for high security crypto-marking for protec Method and apparatus for high security crypto-marking for protec

1990-06-29

1992-08-18

Bell, Janyce

Coating processes

Fraud or tamper detecting

118 315, 118201, 118211, 427145, 427338, 427337, B41M 314

Patent

active

051398125

ABSTRACT:
A high security crypto-marking method for protecting valuable objects in which a target chemical compound suitable for subsequent detection by an appropriate detection means is applied to an object to be marked, wherein the method comprises the following operations:

REFERENCES:
patent: 1689302 (1928-10-01), Smith

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