A few master resets and POOF, the kiddies probably won't be playing with the phone anymore. I like the idea, but useless to me as I don't use a password on my phone. Grandkids know not to play with my phone, unless they ask and I am there. But I have a couple cheap older droids I keep around for the kids to play with. If you do a search, there is a thread, or a place on MS to suggest new ideas, find it and give it a try. They do listen, might take a while, but if they like it, it will become a reality...