What excites me most about wearable sensor devices is the ability to track trends, see measurements in context with the environment and what the wearer is doing, and to then do predictive analytics and guide or coach wearers toward healthier lifestyle choices to prevent medical conditions, not just manage them.

Tech innovation in health care, as elsewhere, advances exponentially as described in http://www.mhealthtalk.com/2013/07/moores-law-and-the-future-of-healthcare/.