1. A method comprising:receiving an image of a fingerprint captured by a camera, the image of the fingerprint being based on light reflected from a fingertip and propagated within a glass layer of a display assembly;
determining feature information from the captured image of the fingerprint;
reducing the amount of feature information through a quantization of the feature information;
generating a histogram associated with the captured image based on the reduced amount of feature information; and
authenticating a user based on the histogram.