Newer phones will have a selfie camera positioned behind the screen. I guess one solution for video calls is to make sure the other person's eyes overlap the ca

Newer phones will have a selfie camera positioned behind the screen. I guess one solution for video calls is to make sure the other person's eyes overlap the camera of your phone (using eye tracking and a perspective transform). Then, as long as both people keep eye contact with each other, the phones can be moved and rotated freely. I wonder if this exists already.