Method of checking authenticity of sheet with built-in electronic circuit chip
US7007854B2 · kind B2 · utility
3Cited by
7References
6Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Sep 30, 2003 |
| Grant date | Mar 7, 2006 |
| Priority date | — |
| Expiry date | Sep 30, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07D7/2033
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A method of checking sheets as to forgery thereof, the sheet being provided with an electronic circuit chip from which information can be read cut or written and having visible information. The method includes a step of encrypting the visible information of the sheet and storing the encrypted visible information in the electronic circuit chip, and a step of determining discriminatively the authenticity of the sheet by comparing the visible information of the sheet with the information stored in the electronic circuit chip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.