Associated Press
New York — In a move that ends a tradition dating more than 150 years, Major League Baseball approved the use of an electronic device for catchers to signal pitches in an effort to eliminate sign stealing and speed games.
Since the beginning of baseball in the 19th century, catchers had used their fingers to signal the type of pitch and its intended location.
As video at balllparks increased in the 21st century, so did sign stealing — and worries about how teams were trying to swipe signals.