Enhancements    

Holographic Method and Materials to Detect and Prevent Forgery in Identity Cards

Holographic Method and Materials to Detect and Prevent Forgery in Identity Cards
Inventors: Jean Robillard, Eric Chesak
Patent No. 5,835,245

Description:
This patent relates to the field of methods and materials for detecting and preventing forgery in identity cards and more particularly to detection methods that rely on the recording of microholograms using variable index materials on the surface of a card or card-like material for the purpose of identifying counterfeit cards. This may be accomplished by visualizing an original unaltered image of the card and comparing this image to a card being examined for authenticity, i.e., to detect alterations that have been made to a card.

Abstract:
Security and identity cards including at least one hologram of the card, or part of the card, are disclosed. Holographic methods and materials to detect and prevent forgery in identity cards such as credit cards and access cards to security areas are disclosed. This invention employs microholograms that are recorded in very small areas on the card and that are not readily visible to the bearer. Special recording materials for high efficiency holograms are used to allow the confinement of the recording in an about 10 to about 100 micron size area. Apparatus for the recording and reading of the holograms are also disclosed.

Issue Date: 11/10/1998
Application Date: 09/01/1994
Post Date: 03/02/2018

UTEP Docket No: 2000-085