Keyboard Planet 6
photo permission page https://www.flickr.com/photos/kurplop/18475911565/in/album-72157651718823173/
(didn't get answer for permission request. I use a smaller image i hope is fair use)
The buttons around the trackball are functional.
In the video, the guy mentioned that he designed the trackball and its buttons for his CAD use (that's 3D modeling software).
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