Identification and verification using complex, three-dimensional structural features
US6584214B1 · kind B1 · utility
74Cited by
14References
26Claims
0Family size
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Key dates
| Filing date | Oct 19, 1999 |
| Grant date | Jun 24, 2003 |
| Priority date | — |
| Expiry date | Oct 19, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07B2017/0083
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Three-dimensional characteristics of a complex physical structure are used to generate a unique identifier. In effect, the characteristics reperesent the basis of a “physical one-way hash function” that faciliates ready derivation of an identifier based on the physical structure, the structure itself being very difficult to reproduce given only the identifier. The characteristics may be read using a non-contact probe and without the need for precise registration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.