Addressing the problem that Google's SafeSearch is only safe if the little blighters you're trying to "protect" from nefarious web content haven't worked out the fairly simple way to undo the settings, Google has introduced a way to lock it down.

Now when choosing the "strict" setting in SafeSearch, users can use their Google username and password to lock it to make sure it stays strict.

Concerned parents can hit play on the video above for a walkthrough on how-to do it - and an at-a-glance way of checking it's locked from across the room - but remember folks, "it's no substitute for adult supervision".