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  2. Expectation of privacy (United States) - Wikipedia

    en.wikipedia.org/wiki/Expectation_of_privacy...

    In United States constitutional law, expectation of privacy is a legal test which is crucial in defining the scope of the applicability of the privacy protections of the Fourth Amendment to the U.S. Constitution. It is related to, but is not the same as, a right to privacy, a much broader concept which is found in many legal systems (see ...

  3. Katz v. United States - Wikipedia

    en.wikipedia.org/wiki/Katz_v._United_States

    According to the Supreme Court, the Fourth Amendment regulates government conduct that violates an individual's reasonable expectation of privacy. But no one seems to know what makes an expectation of privacy constitutionally "reasonable." [...] Although four decades have passed since Justice Harlan introduced the test in his concurrence in Katz v.

  4. Fourth Amendment to the United States Constitution - Wikipedia

    en.wikipedia.org/wiki/Fourth_Amendment_to_the...

    The Bill of Rights in the National Archives. The Fourth Amendment (Amendment IV) to the United States Constitution is part of the Bill of Rights.It prohibits unreasonable searches and seizures and sets requirements for issuing warrants: warrants must be issued by a judge or magistrate, justified by probable cause, supported by oath or affirmation, and must particularly describe the place to be ...

  5. Digital Search and Seizure - Wikipedia

    en.wikipedia.org/wiki/Digital_Search_and_Seizure

    Instead of the Fourth Amendment protecting private spaces defined by physical boundaries, The Court defined private spaces as where there is a "reasonable expectation of privacy." [2] Since Katz, additional case law has defined the scope of "reasonable expectation of privacy" to include cellphones [3] and location data gathered by cellphones. [4]

  6. Kyllo v. United States - Wikipedia

    en.wikipedia.org/wiki/Kyllo_v._United_States

    United States (1967), confirmed the expectation of privacy in one's home, and limited the means by which the government can explore the home without a warrant. Scalia referred to the bright line drawn at the entrance of a home, where the Fourth Amendment is said to recognize a heightened expectation of privacy. [16]

  7. Third-party doctrine - Wikipedia

    en.wikipedia.org/wiki/Third-party_doctrine

    Title III was Congress' attempt to extend Fourth Amendment-like protections to telephonic and other wired forms of communication. In 1976 (United States v. Miller) and 1979 (Smith v. Maryland), the Court affirmed that "a person has no legitimate expectation of privacy in information he voluntarily turns over to third parties." [3]

  8. Illinois License Plate Cameras Are Violating People's ...

    www.aol.com/news/illinois-license-plate-cameras...

    United States, searches that infringe upon "reasonable expectations of privacy" have been held to violate the Fourth Amendment, with some limited exceptions. This recent lawsuit argues that ...

  9. Mosaic theory of the Fourth Amendment - Wikipedia

    en.wikipedia.org/wiki/Mosaic_theory_of_the...

    United States, the judiciary is "obligated, as subtler and more far-reaching means of invading privacy have become available to the government, to ensure that the progress of science does not erode Fourth Amendment protections." [18] The D.C. Circuit court was the first to apply mosaic theory to a Fourth Amendment issue in United