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Proceedings Paper

Synergistic combination of document security techniques
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Paper Abstract

The value of security features tends to decrease gradually, partly because of the continuously increasing ability of counterfeiters to counterfeit or imitate these features and partly because of the increasing capability and availability of equipment. As a countermeasure, numerous non-iridescent and iridescent optically variable devices (OVDs) are continuously being developed. The former comprise novel laser engraving techniques, the latter DOVIDs and ISISs. Although these novel techniques appear highly effective, there are indications that they are beginning to fail, not in the least because organized crime appears to have acquired some of those newer techniques. The response is the synergistic combination of those techniques, which combination expectedly remains beyond the capability of criminal organizations. This ongoing development is currently providing new and exciting security potential. Examples are combinations of diffractive and interference phenomena and of laser perforation techniques with OVDs. The latter combination provide strong protection against counterfeiting as well as forgery.

Paper Details

Date Published: 7 April 2000
PDF: 13 pages
Proc. SPIE 3973, Optical Security and Counterfeit Deterrence Techniques III, (7 April 2000); doi: 10.1117/12.382208
Show Author Affiliations
Rudolf L. van Renesse, TNO Institute of Applied Physics (Netherlands)


Published in SPIE Proceedings Vol. 3973:
Optical Security and Counterfeit Deterrence Techniques III
Rudolf L. van Renesse; Willem A. Vliegenthart, Editor(s)

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