> It seems not too crazy to have a morse code format to input moves too, right?

At 3 minutes per move for the standard format, it's totally reasonable. It might be a bit less feasible during speed chess (which is used as a tie breaker).

Overtime you can learn to isolate pelvic floor muscles and anal sphincter, so a cockring and buttplug, or vag-toy and buttplug, could enable rapid input, and greater bandwidth using cords.