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.
It’s basically a good faith exception. At the time it wasn’t known it was illegal so the police couldn’t have known. Now that they know anything forwarded becomes inadmissible.