In sports, teams and coaches have their own coded messages and signs they use that only they know. You don’t want the other team to know what they are or they will figure out your strategy. In baseball they use hand signs.
It is one thing if the other team sees the signs used by their opponent and relays that information to their own team, but it is another entirely when it comes to using electronic devices to spy on this information, like the Boston Red Sox were recently accused of doing.
The report claims that the Red Sox used electronic devices like the Apple Watch to steal the signs used by the Yankees in the game. This comes from a complaint filed by the Yankees general manager Brian Cashman, claiming that in a video it showed a Red Sox training staff member looking at his Apple Watch in the dugout and then relaying messages to their players. This information apparently allowed the players to know what kind of pitch was going to be thrown, and so allowed them to be better prepared for it.
The Red Sox have admitted that they received signals from video replay, but they say that the Yankees aren’t 100% innocent either, and that the team uses a camera from its television network to steal signs during games as well. Technology and sports will have to learn to get along it seems.