Mechanism for storing authenticity information about a written or printed document
US7357333B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 10, 2005 |
| Grant date | Apr 15, 2008 |
| Priority date | — |
| Expiry date | Mar 15, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07F7/122
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A mechanism for storing authenticity information about a written or printed document. This authenticity information may be stored in a publicly-accessible database. When a document patterned with electronic ink is to be verified, the verifier examines the electronic ink under magnification. The verifier locates start and end pattern markers within the ink, and extracts the pattern from the ink. Once the pattern is obtained, the verifier performs a lookup of the pattern in the database. If the pattern is found, the verifier obtains information associated with the pattern from the database. The verifier may then use this information to verify the authenticity of the document.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.