Under the third-party doctrine, if a person voluntarily provides information to a third party (like the phone company, for example), the Fourth Amendment typically does not preclude the government from accessing it without a warrant because a person has “no legitimate expectation of privacy” in that data. Carpenter v. United States raised the possibility that a warrant may be required for other kinds of records like online accounts, modern bank records, or smart devices to abide by a person’s Fourth Amendment rights. In Carpenter, law enforcement obtained 127 days’ worth of historical cell site location information under the Stored Communications Act. The Supreme Court ruled that a warrant is required for information spanning a length of time of 7 days or more and declined to use the third-party doctrine.