[lopmotr]

It's apparently a bit smarter than GFCI. [1] says it measures the loss in the wire to determine if a person or whatever is touching it. So that would protect people against shocks from touching both wires, which GFCI can't do.

[1] http://magazine.connectedremag.com/publication/?i=488126#{%2...

I think this is a pretty nice idea except for the patents and only having one or two suppliers and lack of technical details.