▁coordin ated ▁surve ill ance ▁of ▁a ▁location ▁or ▁person . ▁St ake outs ▁are ▁generally ▁performed ▁cover t ly ▁and ▁for ▁the ▁purpose ▁of ▁gather ing ▁evidence ▁related ▁to ▁criminal ▁activity . ▁The ▁term ▁der ives ▁from ▁the ▁practice ▁by ▁land ▁survey ors ▁of ▁using ▁survey ▁st akes ▁to ▁measure ▁out ▁an ▁area ▁before ▁the ▁main ▁building ▁project ▁is ▁comm enced . ▁ ▁Internet ▁of ▁things ▁Rec ently , ▁concerns ▁have ▁been ▁raised ▁about ▁surve ill ance ▁with ▁regards ▁to ▁the ▁Internet ▁of ▁things ▁( I o T ) ▁where ▁technology ▁can ▁be ▁used ▁for ▁identification , ▁monitoring , ▁location ▁tracking ▁or ▁to ▁gain ▁access ▁to ▁buildings ▁and ▁networks . ▁ ▁Cont ro vers y ▁ ▁Support ▁ ▁Supp or ters ▁of ▁surve ill ance ▁systems ▁believe ▁that ▁these ▁tools ▁can ▁help ▁protect ▁society ▁from ▁terror ists ▁and ▁crim inals . ▁They ▁argue ▁that ▁surve ill ance ▁can ▁reduce ▁crime ▁by ▁three ▁means : ▁by ▁d eter rence , ▁by ▁observation , ▁and ▁by ▁reconst ruction . ▁Sur ve ill ance ▁can ▁d eter ▁by ▁increasing ▁the ▁chance ▁of ▁being ▁caught , ▁and ▁by ▁reve aling ▁the ▁mod us ▁oper and i . ▁This ▁requires ▁a ▁minimal ▁level ▁of ▁invas iveness . ▁ ▁Another ▁method ▁on ▁how ▁surve ill ance ▁can ▁be ▁used ▁to ▁fight ▁criminal ▁activity ▁is ▁by ▁linking ▁the ▁information ▁stream ▁obtained ▁from ▁them ▁to ▁a ▁recognition ▁system ▁( for ▁instance , ▁a ▁camera ▁system ▁that ▁has ▁its ▁feed ▁run ▁through ▁a ▁fa cial ▁recognition ▁system ). ▁This ▁can ▁for