Personal identification apparatus

Details Personal identification apparatus Personal identification apparatus

1976-05-03

1977-07-12

Boudreau, Leo H.

Communications: electrical

Digital comparator systems

73432R, 361283, G06K 900

Patent

active

040357686

ABSTRACT:
Apparatus used in identifying a person by means of pressure patterns associated with a signature comprises first and second spaced and parallel planar conductor elements with a lamina of elastomeric material on an exposed surface of one of the elements to provide a writing surface for a user who, by means of a stylus, exerts a varying pressure pattern via the lamina onto one of the elements to produce a varying capacitance signal.

REFERENCES:
patent: 3425281 (1969-02-01), Barz
patent: 3480911 (1969-11-01), Danna
patent: 3563097 (1971-02-01), Roggenstein et al.
patent: 3624619 (1971-11-01), Ambrosio
patent: 3858097 (1974-12-01), Polye
patent: 3911215 (1975-10-01), Hurst et al.
patent: 3914548 (1975-10-01), Barish
patent: 3962679 (1976-06-01), Engelbrecht

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