>>1482048 (lb)

PEN Register

§ 3121 - General prohibition on pen register and trap and trace device use; exception

§ 3122 - Application for an order for a pen register or a trap and trace device

§ 3123 - Issuance of an order for a pen register or a trap and trace device

§ 3124 - Assistance in installation and use of a pen register or a trap and trace device

§ 3125 - Emergency pen register and trap and trace device installation

§ 3126 - Reports concerning pen registers and trap and trace devices

§ 3127 - Definitions for chapter

https:// www.law.cornell.edu/uscode/text/18/part-II/chapter-206

An NBC investigative journalism team and a security researcher went wardriving around the DC area with a cell-site-simulator detector that would tell them whenever they came in range of a fake cellphone tower that tried to trick their phones into connecting to it in order to covertly track their locations (some cell site simulators can also hack phones to spy on SMS, calls and data).

They found more than 40 such devices in a single ride; these were sited in such sensitive locations as K-Street, home to DC's massive lobbyist contingent; the Trump Tower hotel; around the city's many embassies; around the Pentagon, Fort Meade and Langley; and in many residential areas.

They estimate – without disclosing their rationale – that half of the devices they detected were part of law-enforcement operations, while the other half are presumably operating on behalf of criminals or foreign spies (in April, the DHS finally admitted that they were concerned about many known "rogue cell site simulators" in DC).

…

https://boingboing.net/2018/05/20/the-future.html