Yesterday, I watched a Yankees spring training game with the pitchers and catchers using the PitchCom system. The catcher relies the signs by pressing buttons on a wristband. It signals to the pitcher what kind of pitch and location. The audio transmitter is in the pitcher's hat and he can receive the signs either in English or Spanish. IMO, it speeded up the pace of play as they don't have to be bother with extra signs to prevent sign stealing. I hope they adopt it next season.