[Centos] Cordless device for presentations?

[chris at math.uu.se (Christian Nygaard)]

What kinda of wireless devices can you use to control a computer remotely 
for presentatations? I have a user thats going to present his thesis and 
thus wants to be able to switch pages in a Adobe acrobat document when 
showing that on a projector screen.

I guess a cordless mouse would work fine, are there any other devices
that people have used for this purpose that works with CentOS?

Thanks,
Chris