the katz v. united states (1967) case is known for establishing that
Katz v. United States Katz v. United States, 389 U.S. 347 (1967)[1], is a United States Supreme Court case discussing the nature of the "right to privacy" and the legal definition of a "search". The Court's ruling refined previous interpretations of the unreasonable search and seizure clause of the Fourth Amendment to count immaterial intrusion with technology as a search, overruling Olmstead v. United States and Goldman v. United States. Katz also extended Fourth Amendment protection to all areas where a person has a "reasonable expectation of privacy". Katz v. United States can often be attributed to the formation and use of the Katz Test in other court cases. The Katz Test has two parts: the first is that the plaintiff displayed an expectation of privacy, and the second is that this expectation is "reasonable".[2]