Pantomation was a very early tracking chromakey system from the 1970s. Originally intended for music scoring, the system was adapted to other styles of performance art. While crude by modern standards, the concept was decades ahead of its time; it can reasonably be considered an early forebear of systems like Microsoft's Project Natal.
From the Slashdot article it is claimed to have run on more than Apple.
Link to really tiny story: http://hardware.slashdot.org/story/11/01/27/1945245/Kinects-Grandaddy-Running-On-an-Apple-IIe-In-1978