Biometrics refers to methods for uniquely recognize humans, based one or more intrinsic physical or behavioral traits. Handwritten Signature is an example of a behavioral feature and the term which has come to general acceptance for this class of biometrics is 'behavior metrics'. Signatures stand as the most accepted form of personal identification for bank transactions, credit card and most of the other routine billing systems. Signature has been a distinguishing feature for person identification through ages. Even today an increasing number of transactions, especially financial, are being authorized via signature, hence methods of automatic signature verification must be developed if authenticity is to be verified on a regular basis.