A separate interface prototype explores deliberate head movement for advancing and returning through presentation slides. It is designed to use the device's accelerometer, with a clearly labeled keyboard and button fallback. This is movement input, not brain control, and it does not change the EEG research gates.
The controller requires a return to the calibrated center position between commands. Pause, stale or lost motion data, loss of the selected presentation, and focus changes inhibit movement commands. Manual assistance is recorded separately. These are implemented software behaviors; their presence does not establish physical gesture reliability.
On 14 October, 50 slide-controller, deck, GUI, and CLI tests passed, with 91.68% branch-aware coverage of the slide module. The GUI test used simulated timestamped acceleration and verified the player's slide index moving forward and back. It was not a device or projector test.
The documented connection attempts did not find a compatible device advertisement, so no physical movement recording or command test was completed. Physical accuracy, idle false commands, response delay, and full-presentation reliability remain unverified. A working manual slide player must be presented as manual software, and any later movement demonstration must name its input accurately.