"When a cellphone is reported stolen in New York, the Police Department routinely subpoenas the phone’s call records, from the day of the theft onward. [...] B

"When a cellphone is reported stolen in New York, the Police Department routinely subpoenas the phone’s call records, from the day of the theft onward. [...] But in the process, the Police Department has quietly amassed a trove of telephone logs, all obtained without a court order, that could conceivably be used for any investigative purpose." Isn't a subpoena a court order?