guy in CF still has to walkie somebody, who then has to flash a signal to a guy that is concentrating on a pitch that has to be on its way by this time. I remain of the opinion that if they are able to do all that and it works then good for them. The signal to the batter would probably be verbal in some pre-determined fashion. I'd think it would be reserved for the more crucial situations later in the game. For all we know, that guy was just collecting info for later use. Even in, like, high school babe ruth we would be badasses and steal signs if we had the angle by saying "let's go kid!" if it was a fastball or "let's go (last name)!" if it was offspeed.