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Proceedings Paper

Advanced verification methods for OVI security ink
Author(s): Paul G. Coombs; Shaun F. McCaffery; Tom Markantes
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Paper Abstract

OVI security ink+, incorporating OVP security pigment* microflakes, enjoys a history of effective document protection. This security feature provides not only first-line recognition by the person on the street, but also facilitates machine-readability. This paper explores the evolution of OVI reader technology from proof-of-concept to miniaturization. Three different instruments have been built to advance the technology of OVI machine verification. A bench-top unit has been constructed which allows users to automatically verify a multitude of different banknotes and OVI images. In addition, high speed modules were fabricated and tested in a state of the art banknote sorting machine. Both units demonstrate the ability of modern optical components to illuminate and collect light reflected from the interference platelets within OVI ink. Electronic hardware and software convert and process the optical information in milliseconds to accurately determine the authenticity of the security feature. Most recently, OVI ink verification hardware has been miniaturized and simplified providing yet another platform for counterfeit protection. These latest devices provide a tool for store clerks and bank tellers to unambiguously determine the validity of banknotes in the time period it takes the cash drawer to be opened.

Paper Details

Date Published: 9 February 2006
PDF: 12 pages
Proc. SPIE 6075, Optical Security and Counterfeit Deterrence Techniques VI, 60750I (9 February 2006); doi: 10.1117/12.652451
Show Author Affiliations
Paul G. Coombs, Flex Products JDS Uniphase Corp. (United States)
Shaun F. McCaffery, Flex Products JDS Uniphase Corp. (United States)
Tom Markantes, Flex Products JDS Uniphase Corp. (United States)

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

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