The Up wristband from Jawbone is an example of just that. Designed in the form of a wristband which you can wear at all times, it is a device that records your every movement, your every heartbeat, your every mood and sleeping and eating patterns, and at the end decides what is best for you. It acts as a pedometer, an accelerometer and so much more. It has a brain of its own and will decide on its own, such as it will alert you to keep moving should you have been idle for too long. Designed to be waterproof, it can be worn at all times in order to always record data. The data can be read through an iPhone app or an Android app.