Under the rules of baseball it is completely ethical to steal a catcher’s signs. Once a batter reaches second base, therefore, teams generally change their signs and make them much more complicated. It is also legal for people who lip read to listen in. For that reason when there is a conference on the mound players and coaches hold gloves or hands in front of their faces. Teams have also been known to place an employee with binoculars out in the bleachers and relay signs. The Yankees were one of the teams who used that method a few years back. Relay ...