Oh man, I wish more services had a kids login/kids button. Watching videos with my daughter really messes up my youtube recommendations.

YT: "What do you want to watch? Some blood-drinking metal band from eastern Europe? Some fine ladies playing beach volleyball? Richard Hammond racing ice-cream trucks on fire? Or Bob the Builder?"

I took a look at the 'Kid Mode' feature on my HTC One. After you add a kid it shows some age-appropriate apps (I guess you can add more) and changes the homescreen activity, modifies the lock screen and intercepts access to other apps, so you can't get out of it unless you do so through the app.

It seems to work well enough, but it could really do with more OS integration e.g. prevent access to the notification drawer and multitasking.

However, given the number of people I know who bought an additional iPad specifically for their kid, Apple probably doesn't need to encourage device sharing!

Kids Corner on Windows Phone is what I want rather than separate accounts.

That said, my 3 and 4 year olds cause no problems with my iPad so I'm not sure how big a deal it is.