Finger/non-finger determination for biometric sensors
US9665763B2 · kind B2 · utility
56Cited by
34References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 31, 2014 |
| Grant date | May 30, 2017 |
| Priority date | — |
| Expiry date | Oct 20, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/1312
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Some methods may involve determining whether an object is positioned on or near a portion of a fingerprint sensor system. If an object is positioned on or near the portion of the fingerprint sensor system, an acoustic impedance of at least a portion of the object may be determined. Based at least in part on the acoustic impedance, it may be determined whether the object is a finger.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.