✦ LIBER ✦

SPIE Proceedings [SPIE Electronic Imaging - San Jose, CA (Saturday 22 January 2000)] Optical Security and Counterfeit Deterrence Techniques III - Digital watermarks as a security feature for identity documents

✍ Scribed by Perry, Burt; Carr, Scott; Patterson, Phil; van Renesse, Rudolf L.; Vliegenthart, Willem A.

No coin nor oath required. For personal study only.

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