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Originally Posted by Putting Guru
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Greetings,
It's called a synchronised stroke - matching the speed of the stroke to the speed of the ball. A great way to teach anyone distance control.
Watch the video.
Cheers
Alex 
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Alex,
Welcome to the forum, we look forward to your contributions. You own an interesting product. Rather point the members here to the video on your site, can you describe in more detail the theory behind your device?
Thanks,
Bagger