Comment by infinite_spin

> First, no. A lot of things supposedly kid-safe have turned out not to be.

I'm not making a comment with respect to the actual safety these systems offer, just that alternatives exist, which would not all require modified hardware.

> what you suggest puts the hard problem (configuring software correctly) in the hands of normal people.

Pre bundled software, specifically browsers, exist. Colleges use them all the time to prevent cheating, e.g. the Lockdown Browser. Those don't require the student to configure anything, they just download the application and login.