With enough of these in a city police etc. can track every single person in the city at little to no cost with accuracy only limited by the density of these readers. It&#x27;s within spitting distance of having a GPS tracker on every car in the city 24&#x2F;7.<p>I&#x27;d be willing to accept them if they only captured and stored information on people with warrants or under investigation but without any cause police shouldn&#x27;t be able to track my every movement and store that data.