[MCN-L] Touchpads anyone?

[Hanan Cohen]

Hello,
 
We are considering the use of a touchpad instead of a trackball in a 
computerized exhibit in development.
 
Does anyone here have any good/bad experience with touchpads used by the public?
 
What model/s do/did you use?
 
Thanks,
 
Hanan Cohen
Webmaster
Bloomfield Science Museum Jerusalem