Personal verification device
AssigneePennwalt Corporation
InventorPeter F. Radice
Life of this patent
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Abstract
A device for verifying personal hand markings, e.g., signatures, and optionally, voice-produced sound, by comparison of electronically produced representations thereof with similar stored information wherein such representations are produced by variations of electrical energy caused by hand markings on a surface adapted to receive said markings and comprising a poled sheet of a piezoelectric-forming resin.
Claims5
In a verification device having a surface adapted to receive hand markings and to transmit a representation of said markings by electrical energy for comparison with a similar representation, the improvement wherein said surface comprises a poled sheet of a piezoelectric-forming resin, said poled sheet holding a sufficient charge to provide an electric response when said sheet is hand marked and being coated on each side with an electroconductive coating for transmission of electric responses generated by said hand markings.
Dependencies are inferred from the claim text.