Meet DuoTrac: a multi-sensor motion tracking device that helps athletes monitor their footwork and improve their performance. DuoTrac can be attached to golf clubs and shoes to help athletes analyze their performance. DuoTrac takes a 4-dimensioanl view plane approach to provide golfers with accurate measurement of clubface path, angle at impact, foot roll, and weight shift. You are going to have an easier time correcting your swing with this data.
The companion app for the device provides you with real-time coaching. It lets you track and compare your stats conveniently. DuoTrac is getting funded on Kickstarter at this time.