US 6,681,028 · Granted 2004-01-20
Paper-based control of computer systems
Digital data is steganographically encoded in printed materials, and—when sensed by an appropriately-equipped webcam or other imaging device—can be used to link to associated electronic resources. Data hidden in a business card, for example, may enable linking to a person's electronic calendar—showing the person's schedule availability. Likewise, data hidden in a corporate ID badge may serve to unlock doors at a corporate office, or to enable access to corporate computers. Many other such applications are detailed.
Patent details
- Publication number
- US 6,681,028
- Filing date
- 1999-05-19
- Grant date
- 2004-01-20
- Assignee
- Digimarc Corporation
- Inventor(s)
- RODRIGUEZ TONY F., CARR JONATHAN SCOTT, RHOADS GEOFFREY B.
- CPC class
- B42D25/22
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