LUMOback wants to show all those DIY posture dilitantes what's what with its Smart Posture Sensor, an app and hardware combo that tracks your carriage and vibrates when you hunch. The thinnish 8.5mm sensor is worn like a belt, and on top of the tactile nagging, it provides detailed iPhone or iPad charting of the sitting, running and even sleeping you did, complete with an xkcd-like stickman video replaying all your crooked moves. So far the team is about a third of the way to its $100K mark, and a minimum $99 pledge will get you
