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Apparatus and method of biometric determination using specialized optical spectroscopy systems

  • US 9,061,899 B2
  • Filed: 09/25/2012
  • Issued: 06/23/2015
  • Est. Priority Date: 06/05/2001
  • Status: Expired due to Fees
First Claim
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1. A method of determining a liveness state of a sample, the method comprising:

  • illuminating the sample with light emitted from a plurality of light sources having different center wavelengths;

    detecting linear effects of light emanating from the illuminated sample with a light detector to generate a tissue spectrum from the detected linear effects; and

    analyzing the tissue spectrum to determine whether the sample comprises living tissue and to perform at least one of a biometric identification or a biometric identity verification from the tissue spectrum.

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