Given that you spend about a second actually executing a drive, it's difficult to get a good idea about what you're doing right or wrong on the range. The Epson M-Tracer Golf Swing Analyzer was designed to scrutinize the subtleties of your sport, allowing you to get an accurate breakdown of your technique. It was presented at CES 2015.
The tiny device attaches at the base of the grip of your golf club and picks up face angle, tempo, speed and swing path. All of this data can be stored for up to 200 swings, and a detailed history can be kept in a tablet or smartphone app. With the golf swing analyzer application, the golfer can get a visualization of his movement and a full diagnosis of his game.