G - Physics – 06 – K
Patent
G - Physics
06
K
354/58
G06K 9/82 (2006.01) G06K 9/00 (2006.01) G07C 9/00 (2006.01)
Patent
CA 1169970
ABSTRACT OF THE DISCLOSURE A method and an apparatus are proposed for performing a comparison of pattersn of invariable form, especially fingerprint pattern. By the application of a finger on a prism within a beam of light, a laten picture of fingerprint lines is obtained which is optically compared with a copy of the same fingerprint stored in memory or located on a card (2). After conversion into an electrical variable, an identification pulse results which is subjected to at least one test criterion and compared with a threshold value. Preferably the monitoring of a master symbol located on the inserted card is effected at the same time, comparing this with a copy of the same stored in memory within the appliance. If the test criteria show an agreement of the fingerprint with the fingerprint copy and/or of the master symbol with the copy of the master symbol then a positive assessment is effected, and access to a building, for instance, is furnished.
367438
El-De Electro-Optic Developments Limited
Robic Robic & Associes/associates
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