https://techcrunch.com/2018/06/22/supreme-court-decision-requires-warrant-to-obtain-cellphone-records-for-tracking/

The United States Supreme court issued a decision this morning required police to obtain a warrant from a judge in order to track individuals through cellphone records. The 5-4 ruling is being regarded as a win for privacy advocates in the U.S.

The decision derived from a 2011 case in which FBI agents used three months of phone records in order to capture and convict a Michigan man of robbing Radio Shack and T-Mobile locations. The suspect’s lawyers argued that the evidence should be thrown out due to a lack of warrant, after their client lost in lower court rulings.