Jawbone UP Bracelet (by GadgetWiki)

With smartphones becoming such a key part of our lives, it’s scarcely surprising that there is now an app that plays our conscience-keeper in matters of our health and fitness. The Jawbone UP comprises a wristband and an app on your iPhone or iPod touch (the device must run iOS 4.1 or higher). The wristband senses one’s motion as well as inactivity.