The Tracker was a piece of technology in the animated series The New Adventures of He-Man.
The Tracker was a machine that Master Sebrian handed to He-Man so he could locate the Reverse Gravity Generator which had been constructed on Denebria using plans stolen from Master Sebrian's Home.
Some time later, Skeletor used the same model to track a homing beacon in Grr's collar who was on the trail of He-Man.