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Fourth Amendment

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University of Maryland Francis King Carey School of Law

Faculty Scholarship

Fourth Amendment

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Articles 1 - 6 of 6

Full-Text Articles in Law

When Enough Is Enough: Location Tracking, Mosaic Theory, And Machine Learning, Steven M. Bellovin, Renée M. Hutchins, Tony Jebara, Sebastian Zimmeck Jan 2014

When Enough Is Enough: Location Tracking, Mosaic Theory, And Machine Learning, Steven M. Bellovin, Renée M. Hutchins, Tony Jebara, Sebastian Zimmeck

Faculty Scholarship

Since 1967, when it decided Katz v. United States, the Supreme Court has tied the right to be free of unwanted government scrutiny to the concept of reasonable xpectations of privacy.[1] An evaluation of reasonable expectations depends, among other factors, upon an assessment of the intrusiveness of government action. When making such assessment historically the Court has considered police conduct with clear temporal, geographic, or substantive limits. However, in an era where new technologies permit the storage and compilation of vast amounts of personal data, things are becoming more complicated. A school of thought known as “mosaic theory” …


A Spectacular Non Sequitur: The Supreme Court's Contemporary Fourth Amendment Exclusionary Rule Jurisprudence, David C. Gray Jan 2013

A Spectacular Non Sequitur: The Supreme Court's Contemporary Fourth Amendment Exclusionary Rule Jurisprudence, David C. Gray

Faculty Scholarship

Much of the Supreme Court’s contemporary Fourth Amendment exclusionary rule jurisprudence is constructed upon an analytic mistake that H.L.A. Hart described in another context as a “spectacular non sequitur.” That path to irrelevance is paved by the Court’s recent insistence that the sole justification for excluding evidence seized in violation of the Fourth Amendment is the prospect of deterring law enforcement officers. This deterrence-only approach ignores or rejects more principled justifications that inspired the rule at its genesis and have sustained it through the majority of its history and development. More worrisome, however, is the conceptual insufficiency of deterrence considerations …


Neurotechnologies At The Intersection Of Criminal Procedure And Constitutional Law, Amanda C. Pustilnik Jan 2013

Neurotechnologies At The Intersection Of Criminal Procedure And Constitutional Law, Amanda C. Pustilnik

Faculty Scholarship

The rapid development of neurotechnologies poses novel constitutional issues for criminal law and criminal procedure. These technologies can identify directly from brain waves whether a person is familiar with a stimulus like a face or a weapon, can model blood flow in the brain to indicate whether a person is lying, and can even interfere with brain processes themselves via high-powered magnets to cause a person to be less likely to lie to an investigator. These technologies implicate the constitutional privilege against compelled, self-incriminating speech under the Fifth Amendment and the right to be free of unreasonable search and seizure …


Fighting Cybercrime After United States V. Jones, David C. Gray, Danielle Keats Citron, Liz Clark Rinehart Jan 2013

Fighting Cybercrime After United States V. Jones, David C. Gray, Danielle Keats Citron, Liz Clark Rinehart

Faculty Scholarship

In a landmark non-decision last term, five Justices of the United States Supreme Court would have held that citizens possess a Fourth Amendment right to expect that certain quantities of information about them will remain private, even if they have no such expectations with respect to any of the information or data constituting that whole. This quantitative approach to evaluating and protecting Fourth Amendment rights is certainly novel and raises serious conceptual, doctrinal, and practical challenges. In other works, we have met these challenges by engaging in a careful analysis of this “mosaic theory” and by proposing that courts focus …


The Supreme Court's Contemporary Silver Platter Doctrine, David C. Gray, Meagan Cooper, David Mcaloon Jan 2012

The Supreme Court's Contemporary Silver Platter Doctrine, David C. Gray, Meagan Cooper, David Mcaloon

Faculty Scholarship

In a line of cases beginning with United States v. Calandra, the Court has created a series of exceptions to the Fourth Amendment exclusionary rule that permit illegally seized evidence to be admitted in litigation forums collateral to criminal trials. This “collateral use” exception allows the government to profit from Fourth Amendment violations in grand jury investigations, civil tax suits, habeas proceedings, immigration removal procedures, and parole revocation hearings. In this essay we argue that these collateral use exceptions raise serious conceptual and practical concerns. The core of our critique is that the collateral use exception reconstitutes a version of …


Tied Up In Knotts? Gps Technology And The Fourth Amendment, Renée Mcdonald Hutchins Jan 2007

Tied Up In Knotts? Gps Technology And The Fourth Amendment, Renée Mcdonald Hutchins

Faculty Scholarship

Judicial and scholarly assessment of emerging technology seems poised to drive the Fourth Amendment down one of three paths. The first would simply relegate the amendment to a footnote in history books by limiting its reach to harms that the framers specifically envisioned. A modified version of this first approach would dispense with expansive constitutional notions of privacy and replace them with legislative fixes. A third path offers the amendment continued vitality but requires the U.S. Supreme Court to overhaul its Fourth Amendment analysis. Fortunately, a fourth alternative is available to cabin emerging technologies within the existing doctrinal framework. Analysis …