SPIE Photonics West 2001
Conference paper

Application of invisible image watermarks to produce remotely printed, duplication resistant, and demonstrably authentic documents

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A complete Internet-based system for the remote production of verifiably-authentic and duplication-resistant documents is presented. This system has a reasonable and straightforward migration path to an eventual "all-digital" embodiment where completed transactions are acknowledged by sending an electronic receipt to the Client that has been signed with the electronic signature of the Originator.