06311214 is referenced by 712 patents and cites 57 patents.

A printed object, such as an item of postal mail, a book, printed advertising, a business card, product packaging, etc., is steganographically encoded with plural-bit data. When such an object is presented to an optical sensor, the plural-bit data is decoded and used to establish a link to an internet address corresponding to that object.

Title
Linking of computers based on optical sensing of digital data
Application Number
9/342689
Publication Number
6311214 (B1)
Application Date
June 29, 1999
Publication Date
October 30, 2001
Inventor
Geoffrey B Rhoads
West Linn
OR, US
Agent
Digimarc Corporation
US
Agent
William Y Conwell
US
Assignee
Digimarc Corporation
OR, US
IPC
G06F 13/00
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