Patent ID: 7533062
Filing Date: 2009-05-12
Classification: G06K,H04N

Abstract:
1. A method for creating a self-authenticating document comprising: providing a base substrate forming the document; printing an authentication seal on the document; creating a bleed area on the authentication seal on the document with an ink where the ink and the substrate interact; obtaining unique bleed properties of the bleed area by scanning the bleed area after termination of bleeding; providing a description of the ink and substrate interaction; generating an identifier code representing the unique bleed properties; generating a signature of the identifier code; encoding the signed identifier code in an information carrier; associating the information carrier with the document; storing the signed identifier code in a remote verification seal code that is not printed on the document; scanning the authentication seal and the information carrier; retrieving identifier codes of the scanned authentication seal and the scanned information carrier; obtaining a comparison result by comparing the identifier codes of the scanned authentication seal and the scanned information carrier, and determining authenticity of the document based on the comparison result.