MLB players can challenge ball and strike calls. The camera-based system is only an experiment for now — but it has the baseball world wondering where to draw the line with technology.

Major League Baseball will experiment with the automated ball-strike challenge system in spring training games. The league announced on Tuesday the ABS system will be used for roughly 60 percent of all spring games between the Grapefruit and Cactus Leagues.

MLB is testing a challenge system this spring training. Cubs pitcher Cody Poteet challenged a ball call on a pitch to Max Muncy, and got it successfully changed to a strike upon review.