Separate access to two and more mice?

nobody wrote on Thursday, September 22, 2005:

Hello, I need to use 2 mice (or more) for my project, for navigating in 3-d and for character animation: smooth control of facial muscles et. c. Possibilities are numerous.

First priority: navigation in 3d-world, using two mice: one in each hand.

Is it hard to implement this feature? I know it is possible in Windoes: Serious Sam allows 2 players use separate mice in split screen… I also heard that this is possible in Linux too.