Aimpad game controller ties Cherry MX switches to analog input
 

We've seen a lot of unconventional PC controllers over the years, including several keypads primed specifically for first-person shooters. The Aimpad looks similar to those offerings, but it's a different animal entirely. Instead of relying on traditional key switch mechanisms, which are either on or off, the Aimpad uses IR sensors to give each key a range of analog input. This change promises finer control over movement in games, much like an analog thumb stick, without sacrificing the precision of one's accompanying mouse.

http://techreport.com/news/26283/aim...o-analog-input