Graphic Art Systems Inc has more than 30 years experience in the retrofitting of print enhancement systems which includes lithographic UV Film casting equipment.  The system operated to impart holographic images into a UV varnish on the printed surface using a reusable etched film which is pressed into the varnish and dried insitu before the film is rewound for reuse.  The coverage can be spot or flood and the pattern bespoke or wallpaper.   Gives a 3D appeal to packaging and gifts.