Besides, he’s in the thumb control camp, and most trackballs that even come close to fitting a billiard ball are designed to be fiddled with the fingers. So he started from the ground up – almost.

Vertical mice and trackballs are not just another type of manipulator. These devices are designed for those who spend a lot ...

Amazon can deliver any number of Logitech peripherals to your door in 48 hours, but where’s the fun in that? With open source hardware (OSHW) input devices like the Ploopy Adept Trackball ...