Generation of reliable PINs from fingerprints

Generating reliable biometric passwords/PINs is a very challenging research topic in access security control. This paper provides a method for the generation of a reliable password/PIN from fingerprint images. A fictitious triangle whose sides are composed of lines connecting two minutiae points closest to the core of a fingerprint image is constructed. The maximal side, the minimal and medial angles, together with the minutiae type involved in the three sides of this triangle are used as the source of password/PIN generation. The noise-tolerant transform criteria convert a decimal value to one digit PIN is provided. Experiments based on public database are presented.