Although we've seen press shots of Logitech's Darkfield mice, which claim to be able to track even on glass surfaces. Here's a few photos of what they look like outside of studio lighting. They're rather pretty, we think.

The larger, weird-shaped...

Logitech has unveiled a pair of mice that it says are the first to be able to track on glass surfaces. They use "Darkfield Laser" technology, which sounds more like something that an evil genius might have come up with to obliterate the Earth.