Make no mistake about it, the iPhone (and the App Store in particular) has made the lives of many home owners much, much easier. As it stands, there are already a few apps out there
that interface with Crestron gear, but to date, there's no official
Crestron app to fiddle with. But give it 60 days or so and there will be -- at least, that's the good word over at the company's booth today at CEDIA. Said application will be 100% free to download, and as you can see in the gallery below, it elegantly enables wired home owners to control lighting, temperature and all sorts of other things via WiFi or 3G, at home or anywhere else in the world. Users can even program in settings for multiple houses, enabling them to turn the AC on in Orlando while blasting the heat in Jackson Hole. So let's see, all you need now is an iPhone, a couple properties, a few dozen grand to blow on Crestron HA gear and a tiny bit of patience.
DIY, 
posted Sep 5th 2008 5:25PM
So all that the iPhone app needs to do is send event triggers based on GPS location. This was the idea that Kevin Rose posted on his blog (of course he's so much of an Apple fanboy that he could never imagine a company like Crestron pulling something like this off - roll eyes)
Using GPS location to determine what room you're in is pretty useless. Assuming you can even get a GPS signal lock indoors, the accuracy will be crap. It could never figure out what room you're in.
this is gonna be great for my lackside estate, mountain cabin, and beverly hills home. Now I can have the right temperature set before I even get to each house.
ahh who am i kidding, I dont even own 1 house, let alone 3. I wish i was rich :(