I bought the Fitbit Air expecting a simple, reliable way to keep an eye on my daily activity. The entire saga left me questioning whether I could trust the Fitbit Air at all. Instead, Fitbit Air recorded something so unrealistic that it changed how I looked at the device. It appears that the Fitbit Air interpreted those repeated wrist movements and vibrations as walking. Instead, the Fitbit Air made it look as though I had been active when I had spent most of the time driving.