19 April 2002 Combining nanocharacter printing, digital watermarking, and UV-coded taggents for optimal machine-readable security
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Proceedings Volume 4677, Optical Security and Counterfeit Deterrence Techniques IV; (2002); doi: 10.1117/12.462707
Event: Electronic Imaging, 2002, San Jose, California, United States
Abstract
The ability to combine printed encrypted nano/micro structures and nano alpha/numeric algorithms - 'NaNOcopy'/'LogoDot' - with embedded digital hidden data, - 'digital watermark' - and/or coded UV taggents - TechMark to create the ultimate machine readable Lock - Hide a Key - Key protection for documents or packaging security is new. Extreme minute nano characters, structures, photographs, or logos, can be printed on a document in a specific pattern configured for forming an anti-copy latent warning message, which appears when copied. The NaNOcopy structures or LogoDots are uniquely micro printed to formulate certain encrypted information or algorithm calculation for further verification and protection from counterfeiting or alteration. Major companies such as IBM, Xerox, Digimark and Spectra Systems are presently offering digital watermarking technologies to secure both digital and analog content. Appleton Security Products has a VeriCam hand held reader, which can detect the combination of a substrate embedded UV coded taggent, TechMark, with the presence of other data such as a digital watermark and NaNOcopy/LogoDot printing. Unless the reader identifies the presence of the TechMark UV coded taggents, the data carrier cannot be opened.
© (2002) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
George K. Phillips, "Combining nanocharacter printing, digital watermarking, and UV-coded taggents for optimal machine-readable security", Proc. SPIE 4677, Optical Security and Counterfeit Deterrence Techniques IV, (19 April 2002); doi: 10.1117/12.462707; https://doi.org/10.1117/12.462707
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KEYWORDS
Printing

Digital watermarking

Visualization

Ultraviolet radiation

Computer security

Halftones

Inspection

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