[risenshinetech]

This already exists, its called the Optishot, and it doesn't work very well when compared to any modern radar or camera based sensors.

[beachy]

The opportunity is for something that can accurately measure your golf swing without a ball.

Optishot is not that:

> Since no ball data is recorded, the OptiShot 2 cannot accurately read how your club impacts the ball, so if you top the ball or even miss entirely, the OptiShot 2 will show that you made solid contact.