| 发明名称 |
COVERT AUTHENTICATION METHOD AND APPARATUS |
| 摘要 |
<p>An authentication system uses the unique distribution of an invisible taggant as a“signature”to identify an item. The verification is error tolerant. The taggant is made visible to a camera by special illumination. Inert taggants, with no optical activity, can be made visible by their thermal properties.</p> |
| 申请公布号 |
EP1761882(A1) |
申请公布日期 |
2007.03.14 |
| 申请号 |
EP20050738555 |
申请日期 |
2005.04.22 |
| 申请人 |
KODAK GRAPHIC COMMUNICATIONS CANADA COMPANY |
发明人 |
GELBART, DANIEL |
| 分类号 |
G06K9/00;G01N37/00;G06K7/10;G06K9/62;G06K9/78;G07D7/12;G07D7/20 |
主分类号 |
G06K9/00 |
| 代理机构 |
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