Inventor
CARR JONATHAN SCOTT
US3 patents
Patents
3 patentsUS6970573B2Nov 29, 2005
Self validating security documents utilizing watermarks
DIGIMARC CORP137 citations98
US6681028B2Jan 20, 2004
Paper-based control of computer systems
DIGIMARC CORP304 citations98
US6389151B1May 14, 2002
Printing and validation of self validating security documents
DIGIMARC CORP391 citations98