
By: Ariana Morello
On June 22, 2018 in Carpenter v. United States the United States Supreme Court held that police must have a warrant and show probable cause when retaining cell-site location information (CSLI), which is the information nearby towers gather from cell phones. In a close 5-4 decision, the Court found that a cell phone user has a legitimate expectation of privacy and CSLI data obtained from a cell phone carrier company qualified as a “search” under the Fourth Amendment.



