Document authentication combining digital signature verification and visual comparison
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United States of America Patent
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Oct 11, 2011
Grant Date -
Jun 1, 2006
app pub date -
Nov 30, 2004
filing date -
Nov 30, 2004
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Abstract
A document authentication system and method combine digital and non-electronic (or visual) authentication methodologies in an integrated, unified manner. As well as providing indicia of digital authentication, the invention generates a physical artifact that can be validated by unaided human visual perception. The present invention thus provides an opportunity to improve the level of trust in authentication of documents, while preserving the advantages of both traditional and digital authentication mechanisms.
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