In the past few years we have seen a “consumerisation” of medical devices, as there has been an explosion of health and fitness-related wearable devices and applications on the market. Many consumer electronics vendors have launched step counters, digital weighing scales, blood pressure monitors, activity bands and, more recently, smart watches, moving the wearables market to an early mass market. It has never been easier for people to get easy access to a variety of health and fitness-r...