The Fourth Amendment does require that the police obtain judicial authorization before using pen registers,which record the numbers dialed from a particular telephone.

Question

Quizplus · Accepted Answer

The Supreme Court ruled in Smith v. Maryland (1979) that the use of a pen register does not constitute a search under the Fourth Amendment, and therefore does not require a warrant or probable cause. This is because individuals have no legitimate expectation of privacy in the numbers they dial.

The Fourth Amendment Does Require That the Police Obtain Judicial