Access systems and methods of identifying an authentic key
US6107931A · kind A · utility
Inventor
Key dates
| Filing date | Dec 4, 1996 |
| Grant date | Aug 22, 2000 |
| Priority date | — |
| Expiry date | Dec 4, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C9/00309
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
The present invention provides for access systems and methods for identifying an authentic key. An embodiment of the access system includes a key having at least one phosphorescent material, the at least one phosphorescent material being operable to emit at least one response photon; a photon receptor coupled with the key, the photon receptor being configured to sample the at least one response photon and generate a representative signal thereof; and a discrimination analyzer coupled with the photon receptor, the discrimination analyzer being operable to generate a control signal responsive to a comparison of the representative signal and a signature code.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.