with analog documentsUS7760902May 28, 2004Jul 20, 2010Digimarc CorporationContent objects with computer instructions steganographically encoded therein, and associated methodsUS7806322Dec 19, 2006Oct 5, 2010Digimarc CorporationAuthentication methods and systems including embedded auxiliary dataUS7809152 *May 14, 2003Oct 5, 2010Schreiner Group Gmbh & Co.