1. In a system wherein a template signature, which is produced, is to be correlated with a subsequently produced specimen signature, and both said signatures have natural landmarks, occurring therealong as they are being produced, the method of segmenting and normalizing the lengths of the signatures between landmarks comprising: for said template signature; generating a plurality of trains of signals, as said template signature is being produced, each train representing a different parameter of said template signature, sampling each train of signals to provide a train of sample signals, detecting each of the natural landmarks in said template signature, as it is being produced and producing a landmark signal for each, adding the number of landmark signals to produce a landmark total, separating each of the trains of sample signals in response to landmark signals, into segments, each segment comprising the sample signals generated between landmark signals, counting the number of sample signals in each segment, to provide a total number of sample signals for each segment, for said specimen signature, generating a plurality of trains of signals, each train representing a different parameter of said specimen signature but corresponding to a parameter of said template signature, sampling each train of signals to provide a train of sample signals, detecting each of the natural landmarks in said specimen signature, as it is being written and producing a landmark signal for each, adding the number of landmark signals to produce a landmark total, separating each of the trains of sample signals in response to landmark signals, into segments, each segment comprising the signals generated between landmark signals, comparing the template signature landmark total with the specimen signature landmark total and producing a true signal if they are alike, in response to said true signal, for each identical parameter of said specimen and template signature, deriving from each entire segment of each said specimen signature signal train substantially the same number of sample signals as the total number of sample signals for each corresponding segment of a corresponding template sample signal train, and correlating said segments of said template signature signal trains containing samples with corresponding segments of said specimen signature signal trains which contain the same number of sample signals.