Logitech gaming mouse combines optical and motion sensors
 

Logitech claims its new gaming mouse is the world's fastest. The G402 Hyperion Fury is designed specifically for first-person shooters, and it's supposed to be capable of tracking reliably at speeds up to 500" per second—a staggering 28 miles per hour.

http://techreport.com/news/26848/log...motion-sensors