Paper
7 April 2000 Improved verification methods for OVI security ink
Paul G. Coombs, Tom Markantes
Author Affiliations +
Abstract
Together, OVP Security Pigment in OVI Security Ink, provide an excellent method of overt banknote protection. The effective use of overt security feature requires an educated public. The rapid rise in computer-generated counterfeits indicates that consumers are not as educate das to banknote security features as they should be. To counter the education issue, new methodologies have been developed to improve the validation of banknotes using the OVI ink feature itself. One of the new methods takes advantage of the overt nature of the product's optically variable effect. Another method utilizes the unique optical interference characteristics provided by the OVP platelets.
© (2000) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Paul G. Coombs and Tom Markantes "Improved verification methods for OVI security ink", Proc. SPIE 3973, Optical Security and Counterfeit Deterrence Techniques III, (7 April 2000); https://doi.org/10.1117/12.382200
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CITATIONS
Cited by 3 patents.
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KEYWORDS
Computer security

Light sources

Reflectivity

Mirrors

Patents

Interference filters

Inspection

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