Authenticating objects using embedded data
US6788800B1 · kind B1 · utility
199Cited by
350References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 25, 2000 |
| Grant date | Sep 7, 2004 |
| Priority date | — |
| Expiry date | Feb 1, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/3281
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
This disclosure describes a method of making a secure product using data hidden in the product itself and a method of using the hidden data to authenticate the product. The method assigns a product identifier to the product, such as a unique serial number. It also steganographically embeds security data into the product. The security data includes the product identifier (e.g., a hashed version of it). The security data is embedded such that it is machine readable and enables automated authentication of the product by comparing the security data decoded from the product with the product identifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.