Tamper resistant circuitry and portable electronic devices

Details Tamper resistant circuitry and portable electronic devices Tamper resistant circuitry and portable electronic devices

2007-03-27

2011-11-01

Jackson, Blane J (Department: 2618)

Telecommunications

Radiotelephone system

Security or fraud prevention

C455S414100

Reexamination Certificate

active

08050657

ABSTRACT:
A portable electronic device. Tamper-resistant circuitry for inclusion in an electronic device. The tamper-resistant circuitry comprises wireless receiving circuitry operable to receive an incoming communication. The tamper-resistant circuitry also comprises a first circuit operable to change a signal state in response to the incoming communication. The tamper-resistant circuitry also comprises a verification sensor circuit coupled to the first circuit. The sensor is operable to detect a circuit condition indicative of unauthorized use and upon detection of the circuit condition to prevent the change of the signal state.

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