US Patent 7336170 Tamper-resistant electronic seal

A tamper-resistant remotely monitorable electronic seal including a shaft portion, a sensor, a socket arranged to engage the shaft portion and the sensor in a monitorable manner and a wireless communicator associated with at least one of the shaft portion, the sensor and the socket and being operative to provide a remotely monitorable indication of at least one monitorable event, the sensor being operative to sense application of force to the electronic seal in an attempt to separate the shaft portion from the socket and to indicate the application of force as one of the at least one monitorable event.