. ▁ ▁Security ▁gu ards ▁are ▁generally ▁given ▁the ▁following ▁criteria ▁that ▁must ▁be ▁met ▁before ▁app reh ending ▁a ▁shop l ifting ▁suspect : ▁ ▁You ▁must ▁see ▁the ▁shop l if ter ▁approach ▁the ▁mer ch and ise ; ▁select ▁the ▁mer ch and ise ; ▁and ▁conce al , ▁convert ▁or ▁carry ▁away ▁the ▁mer ch and ise . ▁ ▁You ▁must ▁maintain ▁continuous ▁observation ▁of ▁the ▁shop l if ter . ▁ ▁You ▁must ▁observe ▁the ▁shop l if ter ▁leave ▁the ▁store ▁and ▁fail ▁to ▁pay ▁for ▁the ▁mer ch and ise . ▁ ▁You ▁must ▁app reh end ▁the ▁shop l if ter ▁outside ▁the ▁store . ▁ ▁Many ▁stores ▁will ▁put ▁up ▁signs ▁warning ▁about ▁the ▁consequences ▁of ▁shop l ifting ▁or ▁signs ▁warning ▁about ▁the ▁use ▁of ▁surve ill ance ▁cam eras ▁in ▁the ▁store . ▁That ▁is ▁intended ▁to ▁d eter ▁people ▁from ▁trying ▁to ▁shop l ift . ▁ ▁Cl osed - circ uit ▁television ▁ ▁Cl osed - circ uit ▁television ▁( C CT V ) ▁monitoring ▁is ▁an ▁important ▁anti - shop l ifting ▁technology . ▁ ▁Ret ail ers ▁foc using ▁on ▁loss ▁prevent ion ▁often ▁dev ote ▁most ▁of ▁their ▁resources ▁to ▁this ▁technology . ▁Using ▁C CT V s ▁to ▁app reh end ▁shop l if ters ▁in ▁the ▁act ▁requires ▁full - time ▁human ▁monitoring ▁of ▁the ▁cam eras . ▁Soph istic ated ▁C CT V ▁systems ▁disc rim inate ▁the ▁scenes ▁to ▁detect ▁and ▁seg reg