*The communicator is a device worn by all members of the crew of the U.S.S. Enterprise as a means of communication, identification and tracking. Diminutive in size, the communicator is capable of audio transmission at a range of up to 500 kilometers, while communication with an orbiting ship is facilitated through the ship's increased transmission/reception capabilities. Activated by a slight touch, the communicator is able to identify a particular crew member through a small dermal sensor. It may be programmed for activation solely by its intended wearer, if security situations make this necessary. The communicator is in the shape of the Starfleet insignia, and is worn on the duty uniform over the left breast. *Source: Back of card