Can I tether the camera in my MacPro Laptop to make it usable with my MacPro Desktop?

I have a program that uses the camera to scan the barcodes of books and software. It then automatically retrieves the information about them. They also have a iTouch companion. The problem is I sync my iTouch with my Desktop. So Is there a way to hook up my Laptop to my desktop such that the cam is available to the Desktop?

Thanks!