1. A computer implemented method for determining a scanner pattern of a biometric scanner, said method comprising: using a processor having associated memories and input and output ports to perform the following, acquiring at least one digital image representing biometric information inputted to a sensor of said biometric scanner; selecting pixels from said at least one digital image to define regions of interest within said at least one digital image; processing the selected pixels from regions of interest to extract and encode a sequence of numbers containing sufficient information to represent said biometric scanner, said sequence of numbers comprising a unique scanner pattern of said biometric scanner; and storing said unique scanner pattern in memory for future comparison with subsequently inputted and processed biometric information.