▁instead ▁of ▁or ▁along ▁with ▁a ▁tag , ▁and ▁a ▁stick - on ▁medical ▁ID ▁tag ▁may ▁be ▁added ▁or ▁used ▁alone . ▁ ▁A ▁type ▁of ▁medic ▁identification ▁alert ▁is ▁the ▁USB ▁medical ▁alert ▁tag , ▁essentially ▁a ▁USB ▁flash ▁drive ▁with ▁capacity ▁to ▁store ▁a ▁great ▁deal ▁of ▁emer gency ▁information , ▁including ▁contacts ▁and ▁medical ▁conditions . ▁This ▁information ▁is ▁accessible ▁by ▁any ▁computer ▁with ▁a ▁USB ▁port . ▁However , ▁the ▁practical ▁effect iveness ▁of ▁such ▁a ▁system ▁is ▁limited ▁in ▁many ▁cases ▁by ▁medical ▁computer ▁systems ▁that ▁restrict ▁the ▁use ▁of ▁USB ▁devices ▁which ▁may ▁carry ▁mal ware . ▁It ▁is ▁also ▁possible ▁that ▁a ▁device ▁carried ▁by ▁an ▁un cons cious ▁person ▁may ▁not ▁be ▁their ▁own , ▁or ▁not ▁be ▁up ▁to ▁date , ▁with ▁con com it ant ▁ris ks ▁to ▁health ▁and ▁legal ▁li ability ▁of ▁medical ▁personnel . ▁ ▁Another ▁new ▁type ▁of ▁medic ▁identification ▁alert ▁is ▁Q R ▁code ▁based ▁medical ▁alert ▁stick ers . ▁The ▁Q R ▁code ▁on ▁the ▁st icker ▁links ▁to ▁a ▁web ▁service ▁that ▁contains ▁the ▁individual ' s ▁emer gency ▁information . ▁The ▁information ▁is ▁accessed ▁by ▁any ▁first ▁res ponder ▁or ▁emer gency ▁personnel ▁by ▁sc anning ▁the ▁Q R ▁code ▁by ▁using ▁a ▁smart phone . ▁Since ▁a ▁web ▁service ▁is ▁used ▁to ▁store ▁the ▁information ▁there ▁is ▁normally ▁no ▁limitation ▁of ▁how ▁much ▁information ▁that ▁can ▁be ▁stored . ▁ ▁Cond itions ▁for ▁use ▁Typ ical ▁conditions ▁or ▁pres cri ptions ▁war rant