1. A method of identifying an authorized signature, which comprises: a. optically electrical images representative of multiple authorized signatures; b. scanning said electrical images to locate signature peaks in said authorized signatures; c. forming feature sets representative of said authorized signatures; d. forming from said feature sets a composite feature set; e. assigning weights to said composite feature set; f. forming a decision threshold from said weights and said composite feature set; g. collecting said decision threshold, said weights and said composite feature set to form a reference data set; h. repeating steps (a) through (c) for an unauthenticated signature; and i. comparing said reference data set with feature sets of said unauthenticated signature.