This article was produced in collaboration with Court Watch, an independent outlet that unearths overlooked court records. Subscribe to them here.
A judge in Nevada has ruled that “tower dumps”—the law enforcement practice of grabbing vast troves of private personal data from cell towers—is unconstitutional. The judge also ruled that the cops could, this one time, still use the evidence they obtained through this unconstitutional search.
Cell towers record the location of phones near them about every seven seconds. When the cops request a tower dump, they ask a telecom for the numbers and personal information of every single phone connected to a tower during a set time period. Depending on the area, these tower dumps can return tens of thousands of numbers.