▁copies ▁not ▁required ▁to ▁be ▁retained ▁for ▁tax ▁or ▁asset ▁invent ory ▁purposes . ▁ ▁If ▁ret ail ers ▁put ▁bar codes ▁on ▁rece i pts ▁that ▁allowed ▁downloading ▁an ▁electronic ▁copy ▁or ▁encoded ▁the ▁entire ▁rece ipt ▁in ▁a ▁ 2 D ▁bar code , ▁consum ers ▁could ▁easily ▁import ▁data ▁into ▁personal ▁fin ance , ▁property ▁invent ory , ▁and ▁gro c ery ▁management ▁software . ▁Rece i pts ▁sc anned ▁on ▁a ▁sc anner ▁could ▁be ▁automatically ▁identified ▁and ▁associated ▁with ▁the ▁appropriate ▁entries ▁in ▁fin ance ▁and ▁property ▁invent ory ▁software . ▁Cons umer ▁tracking ▁from ▁the ▁ret ail er ▁perspective ▁( for ▁example , ▁loyal ty ▁card ▁programs ▁that ▁track ▁consum ers ▁purch ases ▁at ▁the ▁point ▁of ▁sale ▁by ▁having ▁them ▁scan ▁a ▁Q R ▁code ). ▁ ▁A ▁number ▁of ▁enter prise ▁applications ▁using ▁cell ▁ph ones ▁are ▁appearing : ▁ ▁Access ▁control ▁( for ▁example , ▁ticket ▁validation ▁at ▁ven ues ), ▁invent ory ▁reporting ▁( for ▁example , ▁tracking ▁deliver ies ), ▁asset ▁tracking ▁( for ▁example , ▁anti - counter fe iting ). ▁ ▁Sm art ph ones ▁▁ ▁Sm art ph ones ▁can ▁be ▁used ▁in ▁Google ' s ▁mobile ▁Android ▁operating ▁system ▁via ▁both ▁their ▁own ▁Google ▁G og g les ▁application . ▁N ok ia ' s ▁Sym bian ▁operating ▁system ▁features ▁a ▁bar code ▁sc anner ▁which ▁can ▁scan ▁bar codes , ▁while ▁m bar code ▁is ▁a ▁bar code ▁reader ▁for ▁the ▁Ma emo ▁operating ▁system . ▁In