Interesting.<p>I think the myo armband could be a good competitor, and it sits right under your elbow.<p><a href="https://www.thalmic.com/en/myo/" rel="nofollow">https://www.thalmic.com/en/myo/</a><p>It's $150 to pre-order and you get full developer access.<p>I got an alpha version of the myo and had some time to mess around with it. It's pretty powerful. Definitely worth checking out.<p>Pre-oders of the final production version are shipping next month, in case anyone is wondering.
I dig this idea. I wasn't able to actually get it to work, I think I was doing the moving-right action incorrectly.<p>I do wish it had the ability to change the phone's volume, that's the one big lacking thing from music playback that annoys me, you can pause/skip using the watch, but if you want to change your volume you currently have to use your phone.