Barooptical verification apparatus
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United States of America Patent
Stats
-
Jul 28, 1981
Grant Date -
N/A
app pub date -
Jun 15, 1979
filing date -
Jun 15, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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Cited Art Landscape
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