I think it is valid to question WHY there's a rule to have a code printed when it's accepted these days that the aim for 'paperless offices' should encourage the use of displays to convey information that we once printed.
Yes, there's a problem with some scanners and that's likely the real issue but that's for the industry to solve - like big retailers have (well, not Sainsbury's in most stores) as there's no logical reason to stop someone showing a fixed code on a phone screen.
Yes, there's a problem with some scanners and that's likely the real issue but that's for the industry to solve - like big retailers have (well, not Sainsbury's in most stores) as there's no logical reason to stop someone showing a fixed code on a phone screen.