This is neat. I think what would be even neater is to use the head tracking from the notch to compute a transformation of the back-side camera to simulate that

This is neat. I think what would be even neater is to use the head tracking from the notch to compute a transformation of the back-side camera to simulate that you can see through the iPhone. Of course this wouldn't work when the iPhone is too close, or if the angle is too wide, but in other cases, this would make AR really good.