MLB will allow players to use PitchCom devices this season, according to ESPN.
What is PitchCom, exactly? It’s basically a high-tech version of the play call wristband quarterbacks wear.
From ESPN:
Using a pad with buttons on the wrist of the gloved hand, a catcher can signal pitches — pitch type and location — directly to the pitcher through a listening device.
Up to three teammates of the pitcher and catcher will also have access to the signals, aiding fielders in positioning.
The main motivation is to protect against sign-stealing and gain more distance from the subsequent scandals that have plagued the sport for years now.