Security markers for marking a person or property
US7488954B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 2, 2005 |
| Grant date | Feb 10, 2009 |
| Priority date | — |
| Expiry date | Apr 9, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V20/80
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method of identifying a source of a marking fluid applied to a person or an object comprises applying a marking fluid including one or more security markers to a person or an object and illuminating the applied marking fluid to excite the security markers. Photoluminescent emission from the security markers in response to the excitation is measured and compared with one or more pre-defined photoluminescent signatures associated with the source of the marking fluid. The source of the marking fluid is identified based on a match between the detected photoluminescent emission and at least one of the pre-defined photoluminescent signatures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.