Patent US 4,032,889

A palm print identification system including a scanning probe translatable in contact with a human palm along a scan line. The probe may comprise one or more roller or drag probes, including light illumination and photodector means arranged to generate electrical signals representative of the pattern of palm lines. The spacing of palm lines as thus sensed is compared with a master read from an I.D. card or stored in a computer for I.D. verification.