![Image](http://i.imgur.com/0LbAIsG.jpg)
https://www.indiegogo.com/projects/game ... rackball#/
http://www.gamingtrackball.com/
jacobolus wrote: I don’t really understand the design criteria or logical process that went into the shape, button locations, scroll wheel location, etc. Is there an explanation somewhere? The video seems pretty sparse.
For example, just at a glance, that looks like it will take a really uncomfortable thumb motion to use the scroll wheel.
Leaving the scroll wheel in the same place but rotating it 90° would make it map better to a natural motion of the human thumb.