According to an article in The Athletic, former Astros pitcher Mike Fiers has reportedly come forward detailing how the team stole signs from the catchers in real-time and then relayed to the batter if an off-speed pitch was on its way.
Fiers and several other people who were with the Astros organization back in 2017 have supposedly confirmed that during home games at Minute Maid Park, the signs were being captured via camera equipment in the outfield and relayed to the dugout.
It was said that there was a monitor in the Astros dugout receiving the signs from the outfield camera.