Secure keypad including conductive trace
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United States of America Patent
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Nov 14, 2017
Issued Date -
N/A
app pub date -
Nov 17, 2014
filing date -
Nov 17, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
A secure keypad including a housing, a keymat within the housing defining a plurality of depressible keys and including at least one conductive trace traversing at least some of the depressible keys, a key contact board within the housing and being cooperative with the keymat for providing data entry inputs responsive to depression of the depressible keys and a tamper detection circuit coupled to the conductive trace for providing an output indication of tampering with the keypad responsive to a change in the electrical characteristics of the conductive trace resulting from the tampering.
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