Perhaps the fact that I want to run on FreeBSD is not significant since it appears that driver works with X.
I have a lot of experience with touch screens on MS Windows based systems and after a while they always require recalibration. It also appears that I have to edit the XF86Config file myself to calibrate the touch screen in an X environment which in-and-of-itself is not a problem. The problem arises when I leave the system on-site. I cannot require that the supprt staff on-site must be able to calibrate manually. I was wondering if there are any utilities to provide calibration in X and if so what they are.
Ideally I would not have to calibrate a live system but I don't know if that's possible.
Any help would be appreciated.