Is it possible for the Fenix 3 to accomplish some of the same magic as the iWatch in terms of home automation type apps? I would assume an app would have to be open on the mobile device (e.g. iPhone) or a persistent widget. Just curious if it is possible to expand the capabilities in to this sphere?
Assuming your Garmin is connected to the wireless network in your home, you can communicate with the hue bridge pretty easily. The problem is that the Philips Hue API uses HTTP POST to modify the state of your bulbs, and the ConnectIQ API doesn't support HTTP POST at this time.
This could be resolved by writing a proxy app that ran on a computer on your local network or phone. The proxy app would take an HTTP GET request with some parameters and then redirect that to your hue hub using the correct request type.
Another option would be to avoid talking directly to the bridge at all. You can use the GIFTTT app to trigger IFTTT to modify your Hue bulb settings.
I started writing something for this a while ago and ran into the problems I mentioned above. I decided that instead of writing a proxy service to make the correct requests, I'd just wait for HTTP PUT/POST/DELETE support to be added to the ConnectIQ SDK. When it does, this is something I'd like to do.