G09C 1/02

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Patent/Pub #TitleFiling DateIssue/Publication DatePatent Owner
7664710 Remote authentication of two dimensional barcoded indiciaApr 24, 07Feb 16, 10NEOPOST TECHNOLOGIES
5321755 Information-encrypting device and methodDec 18, 92Jun 14, 94DAMATON LIMITED
5307414 Encryption templateDec 22, 92Apr 26, 94998358 ONTARIO INC.