How was the prototype-robot for the Atari 2600 kept in the same position as the robot on screen?
A photo and some details here :
Was it just wheel odometry, I doubt anything else would have been considered, due to costs.
P.S. - It would be great if more prototypes from this company ( or companies ), and from any other companies could be documented, since they may have had impressive features, which were probably too expensive to manufacture .
UPDATE - This robot may have been more than a prototype, since it appears to have been FCC tested ( ? ), the results on the following webpage The Atari Androbot Projects