Higher bandwidth codes??? Re:I'll pass (Score 1)

Can he control the timing of his "yes" signals? If so, this could be made considerably more efficient. Currently it takes on average six inputs and two outputs to specify a letter. But if he can look up either immediately, with a delay, or not at all after hearing a stimulus, then he could signal in Morse code, getting a letter out in (usually) only two or three inputs and the same number of outputs. With better control of his timing, he could signal any of several choices with a single carefully-timed motion.