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Proceedings Paper

Use and efficacy of DOVIDs and other optical security devices
Author(s): Ian M. Lancaster
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Paper Abstract

Diffractive optically variable image devices (DOVIDs) have become the primary overt authentication or security feature on protected documents and products, apart from the substrate itself and the printed design − which are the oldest but still effective authentication features. But their efficacy is being compromised by false expectations and counterfeits. It is therefore necessary to establish a clear statement of the role of DOVIDs and their function in the inspection and protection of suspect items, which will also apply to other optical security devices (OSDs).

Paper Details

Date Published: 9 February 2006
PDF: 7 pages
Proc. SPIE 6075, Optical Security and Counterfeit Deterrence Techniques VI, 60750O (9 February 2006); doi: 10.1117/12.648416
Show Author Affiliations
Ian M. Lancaster, Reconnaissance International Ltd. (United Kingdom)
International Hologram Manufacturing Association (United Kingdom)

Published in SPIE Proceedings Vol. 6075:
Optical Security and Counterfeit Deterrence Techniques VI
Rudolf L. van Renesse, Editor(s)

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