Mike scioscia signs to catcher means?

mike scioscia touches parts on his face then gives three numbers using his hand to his catcher. What does these signs means? What system is he using?

Maybe someone should ask Mr. Scioscia about that. He was a catcher, and a good one. :idea:

Okay. What is Mike relaying to his catcher? Is he just controlling the running game or calling for pitch outs or calling the pitches?