1. A method for use in biometric authentication comprising the steps of: a) sensing a biometric information source to provide biometric data; b) determining a plurality of feature locations, the feature locations of features within the biometric data; c) for a first feature location of the plurality of feature locations forming a plurality of at least a line each based on some of the plurality of feature locations including the first feature location; and, d) forming at least a lookup table entry based on characteristics of the plurality of at least a line.