Photo from http://store.jawbone.com/store/aliphcom/DisplayHomePage
Jawbone UP is a wrist worn computer and motion sensor with a range of apps. How does it work? What can you do with it? Can you make a toe-ring version?
http://www.youtube.com/user/jawbone
More wearable electronics
http://www.coroflot.com/erikcampbell/Samsung-Mobile-Device
http://pinterest.com/caroltpin/wearable-tech/
Madison company making in-shoe power generation
http://www.instepnanopower.com/
-Duncan Carlsmith