The communication of fingerprint module is USB and UART. The fingerprint algorithm extracts features from the acquire fingerprint and represents the fingerprint information.The storage,comparison and search of fingerprints are all by operating fingerprint features. Fingerprint module is an integrated fingerprint processing module integrating paths and fingerprint processing part,which has the characteristics of small,low power consumption and simple. Fingerprint processing includes two processes: fingerprint registration process and fingerprint matching process (in which fingerprint matching is divided-into fingerprint comparison and fingerprint search two way). High reliability,fast-recognition speed,good adaptability of wet and dry finger and fast-fingerprint search speed.