发明名称 |
COVERT VARIABLE INFORMATION ON ID DOCUMENTS AND METHODS OF MAKING SAME |
摘要 |
A method for manufacturing an identification document (100) is provided. A substrate is provided that is constructed and arranged to receive printing thereon. A first variable indicium (16) is printed on the substrate, where the first variable indicium is not visible to the human eye in ambient light but is visible to the human eye when viewed using a first type of light. |
申请公布号 |
CA2471457(A1) |
申请公布日期 |
2003.07.10 |
申请号 |
CA20022471457 |
申请日期 |
2002.12.24 |
申请人 |
DIGIMARC ID SYSTEMS, LLC |
发明人 |
JONES, ROBERT L.;BI, DAOSHEN |
分类号 |
B41M3/14;B42D15/10;H04N1/32 |
主分类号 |
B41M3/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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