Watermarked business cards and methods
US6650761B1 · kind B1 · utility
408Cited by
26References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 29, 1999 |
| Grant date | Nov 18, 2003 |
| Priority date | — |
| Expiry date | Jun 29, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/3274
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.