Quantitative assessment, especially with regard to health issues, has become very important for our society and is deeply integrated in our everyday lives. This is illustrated by the increasing use of the so-called “wearables,” miniature electronic devices that are worn under, with or on top of clothing. Today people all over the world use smart watches or fitness trackers to monitor their activity, check their calorie consumption, and observe their heartbeat and quality of sleep. According to Forbes Magazine one in six consumers currently own and use wearable technology and growth in the wearables market is expected to increase 35% by