This Kid-Proof Outlet Wouldn't Power Up Until You Plug Something In

Any household with small roaming humans inevitably has to block its electrical sockets from tiny probing fingers. But most of the childproof measures out there—plastic plugs, sliding faceplates—can still be impregnated by determined hands. This outlet prototype wouldn't supply any electricity to its sockets until a… » 11/19/14 5:40pm 11/19/14 5:40pm