A system to thwart counterfeiting and copying of documents, ID's, passports, etc, is proposed, together with an optoelectronic system for rapidly and relatively inexpensively verifying the card or document. For highest security a biometric image is used. This is covered with an optical phase mask bonded tightly to the biometric tag, so that they can not be separated. The biometric tag and the phase mask are both authenticated by the reader to verify the person presenting the ID. The phase mask can not be read with incoherent light, since optical phase scatters the light into a random pattern. This eliminates such devices as CCD detectors, computer scanners, and photo-sensitive detectors. Only an optical interferometer could be used to read and copy the phase mask, and then only if it could be separated intact from the biometric tag. Two systems have been studied to verify the phase-mask and biometric tag. One is a conventional coherent optical correlator, usually referred to as the 4-f or frequency plane correlator.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Optical processing for security and anticounterfeiting


    Contributors:


    Publication date :

    1996-01-01


    Size :

    128095 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    High security optical tags for automotive/avionics parts anticounterfeiting

    Boisdur, Enrick / Gesbert, Denis / Kress, Bernard | SPIE | 2010


    High security optical tags for automotive/avionics parts anticounterfeiting [7675-20]

    Boisdur, E. / Gesbert, D. / Kress, B. et al. | British Library Conference Proceedings | 2010


    Optical security and anticounterfeiting systems : 15 - 16 January 1990, Los Angeles, Calif.

    Society of Photo-optical Instrumentation Engineers | TIBKAT | 1990


    Anticounterfeiting features of artistic screening [2951-36]

    Ostromoukhov, V. / Rudaz, N. / Amidror, I. et al. | British Library Conference Proceedings | 1996


    Recent developments of anticounterfeiting techniques in China

    Hsu, Dahsiung / Pei, Wen / Liu, Shou et al. | SPIE | 1998