Method of identification of a product for the purpose of preventing fraud and device for carrying out this method
US5003612A · kind A · utility
2Cited by
6References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 4, 1988 |
| Grant date | Mar 26, 1991 |
| Priority date | — |
| Expiry date | Oct 4, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K15/1835
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
This method consists in introducing a programmed defect at the writing level; the defect will be detected at the reading level by means of a key corresponding to the writing control algorithm which is known only to the user.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.