This would make the most sense if the goal was to actually stop child abuse, given that the majority of it happens in the home.

By the people they know. More likely to be assaulted by family than a stranger.

Not even that: just say sure, give me your phone and pin, and let me read your messages and view your photos.

Guaranteed not 1 person will take you up on that.

People who make that argument should give us their credit card numbers