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Proceedings Paper

Copy-proof machine-readable holograms for security application
Author(s): Guenther J. Dausmann; Irina Menz; Klaus Gnaedig; Zishao Yang
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Paper Abstract

The most frequently used optical security features to protect documents and goods against counterfeiting are various types of rainbow holograms and diffractive optical variable devices (OVDs). Although these features offer a fair degree of security and most known falsifications are rather crude imitations it is still possible to copy them with all hidden and visible information. In our opinion it would be helpful to have copy proof holograms containing a machine readable feature to achieve a doubtfree verification at point of sale and other sites. We present our work towards the development of a copy proof and machine readable hologram with an optically encoded security feature.

Paper Details

Date Published: 15 March 1996
PDF: 4 pages
Proc. SPIE 2659, Optical Security and Counterfeit Deterrence Techniques, (15 March 1996); doi: 10.1117/12.235461
Show Author Affiliations
Guenther J. Dausmann, Holographic Systems Muenchen GmbH (Germany)
Irina Menz, Holographic Systems Muenchen GmbH (Germany)
Klaus Gnaedig, Holographic Systems Muenchen GmbH (Germany)
Zishao Yang, Holographic Systems Muenchen GmbH (Germany)


Published in SPIE Proceedings Vol. 2659:
Optical Security and Counterfeit Deterrence Techniques
Rudolf L. van Renesse, Editor(s)

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