15. The method as claimed in claim 1 wherein the reference image is associated with one or more event pixels in the digital image of the GUI; the one or more event pixels being associated with a computer application event.
16. The method as claimed in claim 15 wherein the reference digital image is associated with position data providing the relative location of: the one or more pixels in the digital image of the GUI that are associated with a computer application event; with respect to; a point within the group of pixels of the reference digital image.