1 January 1998 Optical recognition of phase-encrypted biometrics
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Optical Engineering, 37(1), (1998). doi:10.1117/1.601850
Abstract
An optical security system using phase encryption of biometric identification data is demonstrated. For this effort, fingerprints are used as the biometric signature. Two types of phase masks are fabricated: photopolymer film and polyimide film. The masks containing the phase-encrypted fingerprints are tested using a joint transform optical correlator. The results of the tests demonstrate that the encryption methods are successful, as the target fingerprint is recognized and the test print is rejected.
Eric G. Johnson, James D. Brasher, Don A. Gregory, Peter S. Erbach, Michael T. Duignan, Gregory P. Behrmann, Sing H. Lee, Walter Daschner, Pin Long, "Optical recognition of phase-encrypted biometrics," Optical Engineering 37(1), (1 January 1998). http://dx.doi.org/10.1117/1.601850
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KEYWORDS
Photomasks

Biometrics

Lithography

Analog electronics

CCD image sensors

LCDs

Wavefronts

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