Re: @Kieren McCarthy
Thermal inertia? You wotty wot?
Ah. I see. Your problem is you're thinking like an engineer who wants to build clever, useful things that actually help people.
No. That's the wrong idea, young man. You should be thinking like a combined marketingdroid, designer, and hipster icon.
Then you'll be really excited about the fact that you can sell three - three! - plugs to triangulate the position of a phone your customers probably left in the living room, instead of being someone of clue who would have used a cheap sensor technology that actually works.
Pretty app though. Isn't it just.