| 10038555 |
Biometric authentication system |
— |
2018-07-31 |
| 9867042 |
Radio frequency identification technology incorporating cryptographics |
— |
2018-01-09 |
| 8843760 |
Biometric identification method |
— |
2014-09-23 |
| 8646198 |
Security device |
David G. Rodriguez, Bruce J. Semmler, Jeffrey C. Robertson |
2014-02-11 |
| 8589696 |
Biometric identification method |
— |
2013-11-19 |
| 8381991 |
Radio frequency identification tag with privacy and security capabilities |
— |
2013-02-26 |
| 8169318 |
Radio frequency identification tag with tamper detection capability |
— |
2012-05-01 |
| 7049962 |
Materials and construction for a tamper indicating radio frequency identification label |
David M. Price, James Whitefield, Miao Cao |
2006-05-23 |
| 6888509 |
Tamper indicating radio frequency identification label |
— |
2005-05-03 |
| 5751412 |
Diffraction viewing device to aid in authenticating an optical surface |
Graham Duell, Graeme Bullock, Daphne Flynn, Steven Martinuzzo, Belinda Stening |
1998-05-12 |
| 5461239 |
Method and apparatus for coding and reading information in diffraction gratings using the divergence of diffracted light beams |
— |
1995-10-24 |
| 5204924 |
Optical fibre reflector |
— |
1993-04-20 |