MLB Teams Installing Multiple Surveillance Cameras to Steal Opponents' Signs

Sign stealing is one of the oldest tricks in baseball, but teams today are using technology to find any competitive edge that exists.

According to Sports Illustrated's Tom Verducci, electronic surveillance is a growing trend around the league, with "many" teams using up to six "high magnification cameras" in their home ballpark specifically for stealing opposing teams's signs.

In Los Angeles, the Dodgers' video room three years ago played host to starter Zack Greinke watching for weaknesses in opposing hitters. This season, the set up has a much different objective.

This year, if you walked into the same room you would have found a small army of 20-something analysts in polo shirts and slacks…