Abstract: Disclosed is a method of deriving a biometric identification number and an extended biometric identification number. The biometric identification number is derived based on a plurality of different fingerprint images of a same finger time. The resulting biometric identification number represents those features within the finger tip that are determined to be most stable. Values are determined based on each feature in accordance with characteristics that are determinable in a stable fashion. The resulting biometric identification number is representative of the fingerprint. In order to extend the biometric identification number, further personal data relating to a same individual as the finger tip is encoded within the extended biometric identification number.

Abstract: Disclosed is a method of indexing a first database of records. A fingerprint is received and a biometric identification number is determined based thereon. A database is formed and is indexed based on the biometric identification number. As such, absent knowledge of the actual index value, the index is reconstructable based on a provided fingerprint data.

Abstract: A method, system and computer readable-storage medium for generating an identification code from a fingerprint image exhibiting a plurality of features. The method includes establishing a reference point from the plurality of features, generating at least one metric from the reference point and at least one of the plurality of features and forming the identification code from the at least one metric. Changes in the temperature and humidity of a finger when the image is taken at different times will result in minor variations of the measured features which, upon quantization, result a metric that is invariant from one fingerprint image to the next, for the same finger. This lowers the false rejection rate to an acceptable level. Meanwhile, the metric is sufficiently unique for a given set of features such that the probability of assigning the same metric to two different fingers is lowered to an acceptable level.