US 6,650,761 · Granted 2003-11-18
Watermarked business cards and methods
A person's business card is steganographically encoded with plural-bit data. When presented to a computer system with an optical sensor, the plural-bit data is decoded and used to trigger various functionality. For example, the system can link to a remote data store containing updated contact information for the person-contact information that is updated during the day as the person's activities make different contact information appropriate at different times. A great variety of other arrangements, some employing other steganographically encoded objects, are also detailed.
Patent details
- Publication number
- US 6,650,761
- Filing date
- 1999-06-29
- Grant date
- 2003-11-18
- Assignee
- Digimarc Corporation
- Inventor(s)
- RODRIGUEZ TONY F., RHOADS GEOFFREY B., DAVIS BRUCE L., CARR J. SCOTT
- CPC class
- B42D25/305
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