For remote controls and game controllers, this enables the MotionEngine to run on the controller, on a USB dongle, or directly on a TV or set-top box system-on-a-chip (SoC).
We had a go on "Colors": under a time limit, you have to run the robot over the necessary RFID discs as instructed by the controller's LEDs, and then get to the hexagonal plate -- the "SFX Hub" -- to "deposit" the flags.
The controller looked like a window-mounted air conditioner and could be programmed to run machines in different sequences without rewiring all those cabinets, a huge time-saver.