If something like this was in widespread use it would have much more impact since countries would see whole swathes of the internet immediately go dark when they make stupid laws.
It's an interesting idea. I presume that the there would be similar laws to selling guns. So there would need to be the national ID card and checks when selling any internet-enabled device. TVs, phones, cameras etc.
I as, a parent would probably need a phone safe, into which I could place my phone when I wasn't using it (though I suppose conceal-carry would be permissible). I;d probably want to have biometric locks on my TV, Chromecast etc etc and the children wouldn't be able to use the TV unsupervised unless all smart functions were locked down.
Doesn't sound particularly cool.