Some things are just not practical
I am completely for the protection of minors, but seriously, these days where most mobile phones have cameras in them whether you want them or not, this harebrained idea is a little impractical.
I am not in the least interested in getting the latest greatest mobile phone. To me a phone is a phone is a phone, my phone is like 4 years old, replaced only because my prior one died, replaced in the cheapest possible fashion
...and guess what? It's got a camera built in. I didn't want it. It's shite, but it's there.
So, if this gets passed, is the protagonist going to go get all these child-care related workers new mobile phones sans cameras?
Will it extend to other child-related fields? Will paediatric health professionals have to junk their phones? School teachers?
Don't be absurd. Deal with the fact mobiles are here and most have cameras built in. Employees probably need a bit more vetting and ultimately if you don't trust them, what sort of system have you got?