Finger-operated trackballs have center-mounted balls and work for both right- and left-handed people, while thumb-operated trackballs are shaped similarly to traditional mice and may be easier to ...

There are several solutions for that, but the oldest one is probably the trackball. Ploopy is an open source trackball you can build yourself and it looks pretty capable. While we aren’t wild ...

With open source hardware (OSHW) input devices like the Ploopy Adept Trackball, you not only get to say you built the thing yourself, but there’s also an opportunity to tune the gadget to your ...