https://www.kickstarter.com/projects...-locked-always
I like this idea, it's cheap, and simple. The idea is to have little door sensors (reed switches I guess) that you can easily mount and monitor with your phone. This way you can get a warning if you've left the window open or similar, plus you could turn it into a complete basic alarm system. It's very cheap I think compared to what you'd pay for a DIY fit alarm system, and has some really cool possibilities.
I've pledged anyway, obviously like any kick starter it's a risk, but it's a simple concept, it shouldn't be hard to execute, this isn't like some twits thinking they can make an LED light bulb better than say Phillips, when there are million dollar competitions for anyone who can as it's so hard........
This is one of those ideas that makes me think, hmm yeh, I could nock up a prototype for that in a couple of hours, cool idea, cheap.