Barooptical verification apparatus

Details Barooptical verification apparatus Barooptical verification apparatus

1979-06-15

1981-07-28

Boudreau, Leo H.

Communications: electrical

Digital comparator systems

178 18, 250227, 340365P, G06K 920

Patent

active

042813131

ABSTRACT:
Apparatus used in identifying a person by means of pressure patterns and X-Y movements of a stylus associated with a signature includes first and second spaced and parallel planar conductor means with an excutcheon means for defining 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 while at the same time interrupting light paths to produce X-Y coordinate signals.

REFERENCES:
patent: 3128340 (1964-04-01), Harmon
patent: 3255357 (1966-06-01), Kapany et al.
patent: 3467774 (1969-09-01), Bryant
patent: 3478220 (1969-11-01), Milroy
patent: 3860754 (1975-01-01), Johnson et al.
patent: 4035768 (1977-07-01), Boldridge, Jr. et al.

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