notch

You've got your 6.1-inch screen with a notch and Face ID.

And there's a 1080p webcam up at the top hidden in that bezel, no notch.

Like, to study turtle populations with the mark and recapture method, an ecologist might put a small notch in their shells, or for butterflies, label the wing with a permanent marker.

And by sheer luck, I used a black background on the phone, so you can't see if there's a notch or not at the top.