> this seems not to have any practical significance. and recognizing numbers (only 56%) of the time is practically still as good as guessing, and not useful, in

> this seems not to have any practical significance. and recognizing numbers (only 56%) of the time is practically still as good as guessing, and not useful, in the context of spying, without the spoken words If that accuracy is at the single digit level, then it's significantly better than guessing, which would yield a 10% accuracy. 56% would be good enough to capture a 4-digit OTP code more than 1/8 of the time.