Microstructure encryption and decryption techniques in optical variable and invariable devices in printed documents for security and forensic applications.
Ambadiyil, Sajan; Jayan, K.G.; Prabhu, Radhaskishna; Pillai, V.P. Mahadevan
V.P. Mahadevan Pillai
Robert A. Lieberman
Today, document counterfeiting is a global menace because of the advanced technologies available at ever decreasing prices. Instead of eschew the paper documents; applying efficient cost effective security methodologies are the feasible solutions. This paper reports a novel cost effective and simple optical technique using micro text encrypted optical variable device (OVD) threads, ultra-violet (UV) based optical invariable device (OID) patterns and artistic fonts for secure preparation of the documents and its forensic application. Applying any one of the above technique or together can effectively enhance the level of security of the most valuable document. The genuineness of the documents can be verified using simple decryption techniques.
|Start Date||Apr 13, 2015|
|Publication Date||May 5, 2015|
|Publisher||Society of Photo-optical Instrumentation Engineers|
|Series Title||Proceedings of SPIE|
|Institution Citation||AMBADIYIL, S., JAYAN, K.G., PRABHU, R. and PILLAI, V.P.M. 2015. Microstructure encryption and decryption techniques in optical variable and invariable devices in printed documents for security and forensic applications. In Baldini, F., Homola, J and Lieberman, R.A. (eds.) Optical sensors 2015: proceedings of 2015 International Society for Optics and Photonics (SPIE) optics and optoelectronics conference, 13-16 April 2015, Prague, Czech Republic. Proceedings of SPIE, 9506. Bellingham, WA: SPIE [online], 9506OI. Available from: https://doi.org/10.1117/12.2179635|
|Keywords||Anticounterfeiting; Security printing; Forensic applications|
AMBADIYIL 2015 Microstructure encryption and decryption