Radio frequency identification devices, remote communication devices, identification systems, communication methods, and identification methods

A method of providing an indication relating to the location of an object disposed at a first location and within a communication range of a transmitting radio frequency device, the method comprising:

• transmitting from the transmitting radio frequency device a first radio frequency signal, said transmitting radio frequency device adapted to identify information associated with a radio frequency communications device;
• receiving from the radio frequency communications device a second radio frequency signal, the radio frequency communications device being identified by an identifier;
• and
• observing an indication associated with the object at the first location, said indication being representative of the proximity of the radio frequency communications device to the transmitting radio frequency device.

A method of providing an indication for the location of an object comprising a radio frequency communications device within a communication range of a transmitting radio frequency device, the method comprising:

• transmitting from the transmitting radio frequency device to an object disposed at a first location, a first message comprising an identifier, said identifier associated with the radio frequency communications device;
• and
• receiving from the radio frequency communications device a second message, the radio frequency communications device being identified by the identifier;
• wherein transmissions from the transmitting radio frequency device elicit an indication that is representative of the proximity of the radio frequency communications device to the transmitting radio frequency device.

A method of tracking inventory, the method comprising:

• transmitting by a transceiver apparatus a first message, the first message comprising a device identifier;
• receiving, at least at a radio frequency-based identification device associated with an item at a first location, the first message;
• communicating by the radio frequency-based identification device a second message, the radio frequency-based identification device being identified by the device identifier;
• receiving by the transceiver apparatus the second message;
• and
• providing an indication that is indicative of the proximity of the transceiver apparatus to the first location.