1. A biometric method comprising: illuminating a purported skin site under two unique illumination conditions during the same illumination session, the first illumination condition comprising light with a first wavelength illuminating the purported skin site at a first angle, and the second illumination condition comprising light with a second wavelength illuminating the purported skin site at a second angle, wherein the first wavelength and the second wavelength are distinct and the first angle and second angle are distinct; filtering light from the purported skin site using a color filter array that distinguishes between light of the first wavelength and light of the second wavelength; and imaging the filtered light with a single imager.