Supposeyoudecide tomake a trektothe North Pole. You can't catch a planethere. So instead, youpull out your compass, watch the needleswingnorthward and plot a path, right?
The device saves all the data from each hit, namely the animation, path, putter-face angle at impact and throughout the stroke, angle of attack, tempo, impact speed and swingpath distance -- in other words, more information than most players would know what to do with.
Clubface angle to the tenth of a degree is captured continuously throughout the swing, as is the amount of shoulder turn, club path, arm angles and much more.