Methods and systems are provided for performing a biometric function. A purported skin site of an individual is illuminated with illumination light. The purported skin site is in contact with a surface. Light scattered from the purported skin site is received in a plane that includes the surface. An...http://www.google.fr/patents/US7545963?utm_source=gb-gplus-shareBrevet US7545963 - Texture-biometrics sensor
