Katz v. United States · ¶24

I join the opinion of the Court, which I read to hold only (a) that an enclosed telephone booth is an area where, like a home, Weeks v. United States, 232 U. S. 383, and unlike a field, Hester v. United States, 265 U. S. 57, a person has a constitutionally protected reasonable expectation of privacy; (b) that electronic as well as physical intrusion into a place that is in this sense private may constitute a violation of the Fourth Amendment; and (c) that the invasion of a constitutionally protected area by federal authorities is, as the Court has long held, presumptively unreasonable in the absence of a search warrant.

U. S. Reports, bound volume
U. S. Reports, volume 389, at 347 (Library of Congress) · transcription: Caselaw Access Project
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