“…The second aspect is related to the visual organization of the fields on a tag so that they can be read on the PDA display. Given our experience in this respect [Cerlinca et al, 2006, Cerlinca et al, 2008, we consider that it is rather difficult to create/update a tag that has too many fields. Thus, the visual space on the PDA touch screen is far too small; the low display resolution and small display screen have inhibited information to be displayed completely and clearly.…”