Paper-based control of computer systems
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United States of America Patent
Stats
-
Jan 20, 2004
Issued Date -
N/A
app pub date -
May 19, 1999
filing date -
Jul 27, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
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.
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