▁hook . ▁ ▁Some ▁stores ▁will ▁use ▁dummy ▁cases , ▁also ▁known ▁as ▁" de ad ▁boxes ", ▁where ▁the ▁box ▁or ▁case ▁on ▁the ▁sh elf ▁is ▁entirely ▁empty ▁and ▁the ▁customer ▁will ▁not ▁be ▁given ▁the ▁item ▁they ▁have ▁paid ▁for ▁until ▁the ▁transaction ▁has ▁been ▁completed , ▁usually ▁by ▁other ▁store ▁staff . ▁Some ▁stores ▁have ▁been ▁known ▁to ▁take ▁this ▁idea ▁further ▁by ▁filling ▁the ▁dummy ▁cases ▁or ▁boxes ▁with ▁a ▁weight , ▁similar ▁to ▁the ▁weight ▁of ▁the ▁actual ▁item ▁by ▁using ▁a ▁weight ▁ ▁made ▁to ▁fit ▁inside ▁the ▁box . ▁This ▁causes ▁the ▁shop l if ter ▁to ▁think ▁that ▁the ▁box ▁is ▁full , ▁trying ▁to ▁ste al ▁it ▁and ▁ending ▁up ▁with ▁nothing . ▁This ▁was ▁especially ▁popular ▁in ▁movie ▁r ental ▁stores ▁such ▁as ▁Block b uster ▁Video . ▁ ▁Ret ail ▁bag ▁check ▁exit ▁policy ▁A ▁ret ail ▁bag ▁check ▁exit ▁policy ▁is ▁a ▁form ▁policy ▁or ▁management ▁procedure ▁or ▁set ▁of ▁standard ▁gu idel ines ▁or ▁rules ▁for ▁customers / consum er ▁set ▁in ▁place ▁by ▁a ▁store ▁owner ▁or ▁manager ▁or ▁owner ▁of ▁the ▁store . ▁In ▁some ▁ret ail ▁stores ▁such ▁as ▁J B ▁Hi - Fi , ▁customers ▁are ▁randomly ▁asked , ▁instruct ed , ▁or ▁requested ▁or ▁subject ▁to ▁present ▁their ▁personal ▁b ags ▁for ▁ins pection ▁by ▁a ▁staff ▁or ▁security ▁guard ▁or ▁loss ▁prevent ion ▁associate ▁when ▁leaving ▁the ▁store ▁on ▁condition ▁of ▁entry . ▁ ▁Additionally , ▁some ▁stores ▁such ▁as ▁J B ▁Hi