Sub-dermal Tracker
developed by the Empire's scientists, this small tracking device was implanted just below the skin of an Imperial agent. A specialized transceiver allowed the tracker to be recalibrated with an external control unit, so that the tracker could be tuned to different frequencies and codes. Because the tracker was implanted in the agent's body, it could relay information directly to the agent's brain via nerve impulses. In this way, an agent could track a target without being overly obvious about it.