Alarm systems, remote communication devices, and article security methods

摘要

Alarm systems, remote communication devices, and article security methods are described according to some aspects of the disclosure. In one aspect, an article security method includes associating a remote communication device with an article to be secured; using the remote communication device, generating a plurality of electrical signals responsive to receipt of spurious electromagnetic energy and a plurality of wireless signals of a base communication device associated with the remote communication device to form an alarm system; distinguishing the electrical signals generated responsive to the spurious electromagnetic energy from electrical signals generated responsive to the wireless signals of the base communication device; and responsive to the distinguishing, generating a plurality of human perceptible alarm signals corresponding to respective ones of the electrical signals generated responsive to the wireless signals of the base communication device.