Alarm systems, remote communication devices, and article security methods

A remote communication device comprising:

• a housing configured to be coupled with an article to be secured;
• alarm circuitry coupled with the housing;
• an antenna circuit coupled with the housing and configured to receive a plurality of wireless signals emitted at a plurality of different moments in time from a base communication device associated with the remote communication device to form an alarm system;
• conditioning circuitry configured to generate a plurality of electrical signals corresponding to the wireless signals;
• monitoring circuitry configured to monitor for the presence of spurious electromagnetic energy at the remote communication device;
• and
• processing circuitry coupled with the conditioning circuitry and the monitoring circuitry and configured to identify some of the electrical signals as corresponding to wireless signals communicated by a base communication device responsive to the monitoring by the monitoring circuitry, and wherein the processing circuitry is configured to control the alarm circuitry to generate a plurality of human perceptible alarm signals corresponding to respective ones of the identified some of the electrical signals.

An article security method comprising:

• associating a remote communication device with an article to be secured;
• using the remote communication device, receiving spurious electromagnetic energy and wireless signals of a base communication device associated with the remote communication device to form an alarm system;
• analyzing the received spurious electromagnetic energy and the received wireless signals with respect to criteria usable to identify the wireless signals of the base communication device;
• indicating satisfaction of the criteria corresponding to individual ones of the received spurious electromagnetic energy and the wireless signals;
• distinguishing the satisfied criteria indications resulting from the wireless signals of the base communication device from the satisfied criteria indications resulting from the spurious electromagnetic energy;
• and
• responsive to the distinguishing, generating a plurality of human perceptible alarm signals corresponding to the satisfied criteria indications resulting from the wireless signals of the base communication device.

An article security method comprising:

• 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.