Secure identification documents
US8448991B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 17, 2006 |
| Grant date | May 28, 2013 |
| Priority date | — |
| Expiry date | Feb 13, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB42D2035/50
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Improvements that prevent tampering of images on identification documents for example identity cards, credit cards and the like, and passports. The document includes a full color image of a person, and a second, full, achromatic image of the person formed underneath and spaced from the color image and in congruence therewith using a laser. The second full image is not visible underneath the first full image during normal viewing of the document, and is only visible upon removal of all or a portion of the first full image. As a result, the document and the image have no outwardly apparent visual difference to the document holder or to a would-be counterfeiter. This provides a covert security feature that is not known or seen until the document is attacked by removing the first full image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.