http://sls.iykpqm7jiradoeezzkhj7c4b33g4hbgfwelht2evxxeicbpjy44c7ead.onion/technologies/cell-site-simulators-imsi-catchers
Some cell-site simulators are small enough to fit in a police cruiser, or even on the vest of an officer, allowing law enforcement officers to drive to multiple locations, capturing from every mobile device in a given area—in some cases up to 10,000 phones at a time. These indiscriminate, dragnet searches include phones located in traditionally protected private spaces, such as homes and doctors’ offices.