Fingerprint, English name: Fingerprint. Because of its lifelong invariance, uniqueness and convenience, it has almost become the pronoun of biological feature recognition. Fingerprints are the lines formed by unequal convex and concave skin on the frontage surface of finger ends. Fingerprint lines are arranged regularly and form different patterns. The starting point, end point, binding point and bifurcation point of fingerprint lines are known as the detailed feature point of fingerprint (minutiae). Fingerprint recognition uses this pattern.