Matching unique patterns, i.e. patterns that are unique to each individual paper

Full Title

Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency > Testing patterns thereon (G07D7/004, G07D7/005 take precedence) > using pattern matching > Matching unique patterns, i.e. patterns that are unique to each individual paper