okay...
If the worker can get away with taking indecent pictures of the children they'll be able to sneak in a camera phone. You can't compair this to anti-weapon laws, totally different situation. Does anyone think that some paedophile who works at a daycare would be stopped by a "no cameraphone" rule? Please.
I'm not supposed to have my phone on me at work, but I do anyway. Just in case there's an emergency or something, otherwise it stays in my pocket.
Of course if a public figure were to reveal this logic, they'd be scared of looking like they support paedophiles.