Yup we've looked into that. It's not accurate enough to feel good to use, and often you go off screen for a bit which breaks the interaction. The infrared senso

Yup we've looked into that. It's not accurate enough to feel good to use, and often you go off screen for a bit which breaks the interaction. The infrared sensor actually has a field of view wider than the camera and helps maintain the connection in that brief offscreen moment.