Tamper-proof indicia-bearing article

Details Tamper-proof indicia-bearing article Tamper-proof indicia-bearing article

B - Operations, Transporting

32

B

283/25, 117/6

B32B 33/00 (2006.01) B32B 27/16 (2006.01)

Patent

CA 1086797

ABSTRACT OF THE DISCLOSURE An indicia-bearing article for conveying information from one person to a second person in such a way that the information cannot be sur- reptitiously detected by an intervening person. The indicia-bearing article is so constructed that detection of the indicia necessarily requires some irreparable and detectable disfigurement or mutilation of the article. Use of the article in lottery ticket distribution and use in connection with the transfer of highly confidentail governmental or business information, are typical applications. The most advantageous construction of the invention combines means to avoid surreptitious detection of the hidden indicia by optical, chemical, thermal and mechanical processes.

315724

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