Document authentication using the physical characteristics of underlying physical media
US7028188B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 30, 2000 |
| Grant date | Apr 11, 2006 |
| Priority date | — |
| Expiry date | Jul 25, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07D7/004
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A method for authenticating a document in which a document key for the document is generated by examining one or more attributes of a physical media that underlies the document. An original image is then imparted onto the physical media so that the original image is associated with the document key in a way that enables a subsequent recovery of the document key from the original image. This tying together of the underlying physical media, through the document key, with an original image enables detection of a forgery which was performed either through an alteration of the original image, or ink stripping and re-printing, or a printing of the original image on another physical media.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.