Genuine question: How would the watch help the opponent? Presumably the watch could only relay a very limited amount of data to the opponent that he could utili

Genuine question: How would the watch help the opponent? Presumably the watch could only relay a very limited amount of data to the opponent that he could utilise without arousing suspcion? And presumably with the way tech is going, you could probably have some kind of implantable or worn device that could relay the same information that you'd struggle to detect. For example, you could have some kind of small device implanted or worn over the calf that gave off some kind of morse code style vibrations to indicate where to move the piece to, first giving off a number: 1 - pawn 2 - rook 3 - knight 4 - bishop 5 - queen 6 - king Followed by a pause, followed by another vibration series between 1 - 8 for column, followed by a pause, followed by another 1 - 8 vibration series for row. I don't see how such a device would be feasibly detected. I'm not a radio engineer so I don't know but wouldn't you have to have every chess match played in a Faraday cage to protect against it?