Fourth Amendment Commons^™

Warranted Exclusion: A Case For A Fourth Amendment Built On The Right To Exclude, Mailyn Fidler

SMU Law Review

Searches intrude; fundamentally, they infringe on a right to exclude. So that right should form the basis of Fourth Amendment protections. Current Fourth Amendment doctrine—the reasonable expectation of privacy test—struggles with conceptual clarity and predictability. The Supreme Court’s recent decision to overturn Roe v. Wade casts further doubt on the reception of other privacy-based approaches with this Court. But the replacement approach that several Justices on the Court favor, what I call the “maximalist” property approach, risks troublingly narrow results. This Article provides a new alternative: Fourth Amendment protection should be anchored in a flexible concept derived from property law—what …

Criminal Procedure—"I Smell Marijuana”—Why Arkansas’S Categorical Authorization For A Warrantless Automobile Search Is Entirely Unreasonable, W. Jennings Stanley

University of Arkansas at Little Rock Law Review

No abstract provided.

Criminal Procedure—Resolving The Circuit Split Regarding The Expectation Of Privacy In Mail Addressed With An Alias, Rachel Key

University of Arkansas at Little Rock Law Review

No abstract provided.

The Tesla Meets The Fourth Amendment, Adam M. Gershowitz

Faculty Publications

Can police search a smart car’s computer without a warrant? Although the Supreme Court banned warrantless searches of cell phones incident to arrest in Riley v. California, the Court left the door open for warrantless searches under other exceptions to the warrant requirement. This is the first article to argue that the Fourth Amendment’s automobile exception currently permits the police to warrantlessly dig into a vehicle’s computer system and extract vast amounts of cell phone data. Just as the police can rip open seats or slash tires to search for drugs under the automobile exception, the police can warrantlessly …

Telephone Pole Cameras Under Fourth Amendment Law, Matthew Tokson

Utah Law Faculty Scholarship

In a series of recent cases, police officers have mounted sophisticated surveillance cameras on telephone poles and pointed them at the homes of people suspected of a crime. These cameras often operate for months or even years without judicial oversight, collecting vast quantities of video footage on suspects and their activities near the home. Pole camera surveillance raises important Fourth Amendment questions that have divided courts and puzzled scholars.

These questions are complicated because Fourth Amendment law is complicated. This is especially the case today as Fourth Amendment law is in a transitional phase, caught between older and newer paradigms …

Escaping Circularity: The Fourth Amendment And Property Law, João Marinotti

Articles by Maurer Faculty

The Supreme Court’s “reasonable expectation of privacy” test under the Fourth Amendment has often been criticized as circular, and hence subjective and unpredictable. The Court is presumed to base its decisions on society’s expectations of privacy, while society’s expectations of privacy are themselves presumed to be based on the Court’s judgements. As a solution to this problem, property law has been repeatedly propounded as an allegedly independent, autonomous area of law from which the Supreme Court can glean reasonable expectations of privacy without falling back into tautological reasoning.

Such an approach presupposes that property law is not itself circular. If …

In Celebration Of Dissents (And Lengthy Textbooks): How Digital Became Different For The Fourth Amendment And Why It Is Time For A Real Warrant Default, Stephen E. Henderson

Faculty Articles

The last decade has brought tremendous change to the Fourth Amendment, finally resulting in a ‘digital is different’ norm. We stand at an inflection point between a monolithic, analog past and a murky future of yet-unarticulated constitutional digital policing rules. It is a good time, then, to reflect upon how we came to be here and where we ought to go. This Essay first looks back to a monumental, majestic dissent: that of Justice Louis Brandeis in the 1928 decision of Olmstead v. United States. Every American, and especially every law student, ought to know that opinion, and judges …

Smart Meters As A Catalyst For Privacy Law, Matthew Tokson

Utah Law Faculty Scholarship

Smart utility meters raise several puzzling legal questions—and answering them can help point the way toward the future of Fourth Amendment and civil privacy law. This forum essay addresses two such issues: use restrictions on collected data, and voluntary data disclosure.

First, more than any other current technology, smart meters compel the development of use restrictions on collected data. The benefits of smart meters are potentially enormous, such that categorically prohibiting public utilities from collecting smart meter data is likely beyond the pale. Yet allowing law enforcement agents to obtain detailed or intimate data about the home without a warrant …

Fourth Amendment Privacy In Public: A Fundamental Theory With Application To Location Tracking, Jordan Wallace-Wolf

Law Faculty Scholarship

When we walk out our front door, we are in public and other people may look at us. But intuitively, we don’t open ourselves up to unlimited scrutiny just by going outside. We retain some privacy, even in public. What is the source of this residual public-privacy, and how should the law recognize it without degrading the open character of public space?

The answer given by commentators, and most recently by the Supreme Court in Carpenter v. U.S., comes in the form of two related claims. The first is the chilling theory of the Fourth Amendment. According to this idea, …

The New Bailments, Danielle D'Onfro

Scholarship@WashULaw

The rise of cloud computing has dramatically changed how consumers and firms store their belongings. Property that owners once managed directly now exists primarily on infrastructure maintained by intermediaries. Consumers entrust their photos to Apple instead of scrapbooks; businesses put their documents on Amazon’s servers instead of in file cabinets; seemingly everything runs in the cloud. Were these belongings tangible, the relationship between owner and intermediary would be governed by the common-law doctrine of bailment. Bailments are mandatory relationships formed when one party entrusts their property to another. Within this relationship, the bailees owe the bailors a duty of care …

Alexa Hears With Her Little Ears—But Does She Have The Privilege?, Lauren Chlouber Howell

St. Mary's Law Journal

Abstract forthcoming.

The Fourth Amendment Stripped Bare: Substantiating Prisoners' Reasonable Right To Bodily Privacy, Meher Babbar

Northwestern University Law Review

Prisoners’ rights to bodily privacy under the Fourth Amendment are limited, allowing detention officials to strip-search them for contraband. The extent to which the Fourth Amendment protects prisoners, however, is uncertain. Questions regarding whether strip searches require reasonable suspicion and the manner in which officials may conduct strip searches have troubled courts for decades. In the absence of clear guidance from the Supreme Court, courts have reached inconsistent conclusions, imperiling the human rights and dignity of prisoners. This Note argues that courts should define and apply prisoners’ rights to bodily privacy with reference to international human-rights law, specifically the United …

Bitcoin Searches And Preserving The Third-Party Doctrine, Christine A. Cortez

St. Mary's Law Journal

Abstract forthcoming.

Cloudy With A Chance Of Government Intrusion: The Third-Party Doctrine In The 21st Century, Steven Arango

Catholic University Law Review

Technology may be created by humans, but we are dependent on it. Look around you: what technology is near you as you read this abstract? An iPhone? A laptop? Perhaps even an Amazon Echo. What do all these devices have in common? They store data in the cloud. And this data can contain some of our most sensitive information, such as business records or medical documents.

Even if you manage this cloud storage account, the government may be able to search your data without a warrant. Federal law provides little protection for cloud stored data. And the Fourth Amendment may …

Revising Reasonableness In The Cloud, Ian Walsh

Washington Law Review

Save everything—just in case––and search for it later. This is a modern mantra fueled by the ubiquity of smartphones, laptops, tablets, and free or low-cost data storage that leads users to store massive amounts of data in the cloud. But when users trust third-party cloud storage providers with private communications, they also surrender Fourth Amendment constitutional certainty. Existing statutory safeguards for these communications are lower than Fourth Amendment warrant and probable cause standards; this permits the government to seize large quantities of users’ private communications stored in the cloud with only minimal justification. Due to the revealing nature of such …

A World Of Difference? Law Enforcement, Genetic Data, And The Fourth Amendment, Christopher Slobogin, J. W. Hazel

Vanderbilt Law School Faculty Publications

Law enforcement agencies are increasingly turning to genetic databases as a way of solving crime, either through requesting the DNA profile of an identified suspect from a database or, more commonly, by matching crime scene DNA with DNA profiles in a database in an attempt to identify a suspect or a family member of a suspect. Neither of these efforts implicates the Fourth Amendment, because the Supreme Court has held that a Fourth Amendment "search" does not occur unless police infringe "expectations of privacy society is prepared to recognize as reasonable" and has construed that phrase narrowly, without reference to …

The Jones Trespass Doctrine And The Need For A Reasonable Solution To Unreasonable Protection, Geoffrey Corn

Arkansas Law Review

Each day that Houston drivers exit from Interstate 45 to drive to downtown Houston, they pass an odd sight. Nestled within some bushes is an encampment of tents. This encampment is very clearly located on public property adjacent to the interstate highway, and equally clearly populated by homeless individuals. While local police ostensibly tolerate this presence, at least temporarily, the sight frequently evokes an image in my mind of a police search of those tents. This thought is especially prominent on the days I am driving to my law school, South Texas College of Law Houston, to teach my federal …

Trading Privacy For Promotion? Fourth Amendment Implications Of Employers Using Wearable Sensors To Assess Worker Performance, George M. Dery Iii

Northwestern Journal of Law & Social Policy

This Article considers the Fourth Amendment implications of a study on a passive monitoring system where employees shared data from wearables, phone applications, and position beacons that provided private information such as weekend phone use, sleep patterns in the bedroom, and emotional states. The study’s authors hope to use the data collected to create a new system for objectively assessing employee performance that will replace the current system which is plagued by the inherent bias of self-reporting and peer-review and which is labor intensive and inefficient. The researchers were able to successfully link the data collected with the quality of …

The Fourth Amendment At Home, Thomas P. Crocker

Indiana Law Journal

A refuge, a domain of personal privacy, and the seat of familial life, the home holds a special place in Fourth Amendment jurisprudence. Supreme Court opinions are replete with statements affirming the special status of the home. Fourth Amendment text places special emphasis on securing protections for the home in addition to persons, papers, and effects against unwarranted government intrusion. Beyond the Fourth Amendment, the home has a unique place within constitutional structure. The home receives privacy protections in addition to sheltering other constitutional values protected by the Due Process Clause and the First Amendment. For example, under the Due …

Keeping The Zombies At Bay: Fourth Amendment Problems In The Fight Against Botnets, Danielle Potter

Washington and Lee Journal of Civil Rights and Social Justice

You may not have heard of a botnet. If you have, you may have linked it to election shenanigans and nothing else. But if you are reading this on a computer or smartphone, there is a good chance you are in contact with a botnet right now.

Botnets, sometimes called “Zombie Armies,” are networks of devices linked by a computer virus and controlled by cybercriminals. Botnets operate on everyday devices owned by millions of Americans, and thus pose a substantial threat to individual device owners as well as the nation’s institutions and economy.

Accordingly, the United States government has been …

Cryptography, Passwords, Privacy, And The Fifth Amendment, Gary C. Kessler, Ann M. Phillips

Journal of Digital Forensics, Security and Law

Military-grade cryptography has been widely available at no cost for personal and commercial use since the early 1990s. Since the introduction of Pretty Good Privacy (PGP), more and more people encrypt files and devices, and we are now at the point where our smartphones are encrypted by default. While this ostensibly provides users with a high degree of privacy, compelling a user to provide a password has been interpreted by some courts as a violation of our Fifth Amendment protections, becoming an often insurmountable hurdle to law enforcement lawfully executing a search warrant. This paper will explore some of the …

Cell-Site Location Information And The Privacies Of Life: The Impact Of Carpenter V. United States, Trevor Moore

Loyola of Los Angeles Law Review

No abstract provided.

Drones: Where Does The National Airspace System Start?, Jason T. Lorenzon J.D.

National Training Aircraft Symposium (NTAS)

Unmanned Aerial Systems (UAS), Unmanned Aeronautical Vehicles (UAV), drones and Personal Aerial Vehicles (PAV) constitute the greatest technological advancement since the jet age. (Elaine Chao, Secretary of Transportation, October 26, 2017) This technological advancement has prompted significant public policy challenges and the need for new laws regarding navigable airspace. This proposal investigates how airspace used by drones will evolve given existing Constitutional and common law principals. These principals will influence the creation, development and modification of UAS airspace regulations by the Federal Aviation Administration (FAA).

Two critical but unanswered questions concerning the National Airspace System, are where does navigable airspace …

Privacy, Eavesdropping, And Wiretapping Across The United States: Reasonable Expectation Of Privacy And Judicial Discretion, Carol M. Bast

Catholic University Journal of Law and Technology

One-party consent and all-party consent eavesdropping and wiretapping statutes are two broad pathways for legislation to deal with the problem of secret taping and some states protect conversation under state constitutions. Whether a conversation is protected against being taped as a private conversation is often gauged by the reasonable expectation of privacy standard. Judges in both all-party consent and one-party consent jurisdictions have had to use their leeway under the reasonable expectation of privacy standard to arrive at what at the time seemed to be the most appropriate solution, perhaps in doing so creating a case law exception.

The Fourth Amendment Inventory As A Check On Digital Searches, Laurent Sacharoff

Sturm College of Law: Faculty Scholarship

Police and federal agents generally must obtain a warrant to search the tens of thousands of devices they seize each year. But once they have a warrant, courts afford these officers broad leeway to search the entire device, every file and folder, all metadata and deleted data, even if in search of only one incriminating file. Courts avow great reverence for the privacy of personal information under the Fourth Amendment but then claim there is no way to limit where an officer might find the target files, or know where the suspect may have hidden them.

These courts have a …

Protecting Online Privacy In The Digital Age: Carpenter V. United States And The Fourth Amendment’S Third-Party Doctrine, Cristina Del Rosso, Carol M. Bast

Catholic University Journal of Law and Technology

The goal of this paper is to examine the future of the third-party doctrine with the proliferation of technology and the online data we are surrounded with daily, specifically after the Supreme Court’s decision in Carpenter v. United States. It is imperative that individuals do not forfeit their Constitutional guarantees for the benefit of living in a technologically advanced society. This requires an understanding of the modern-day functional equivalents of “papers” and “effects.”

Looking to the future, this paper contemplates solutions on how to move forward in this technology era by scrutinizing the relevancy of the third-party doctrine due …

A New Era: Digital Curtilage And Alexa-Enabled Smart Home Devices, Johanna Sanchez

Touro Law Review

No abstract provided.

United States V. Touset, Katelyn James

NYLS Law Review

No abstract provided.

Saving America’S Privacy Rights: Why Carpenter V. United States Was Wrongly Decided And Why Courts Should Be Promoting Legislative Reform Rather Than Extending Existing Privacy Jurisprudence, David Stone

St. Mary's Law Journal

Privacy rights are under assault, but the Supreme Court’s judicial intervention into the issue, starting with Katz v. United States and leading to the Carpenter v. United States decision has created an inconsistent, piecemeal common law of privacy that forestalls a systematic public policy resolution by Congress and the states. In order to reach a satisfactory and longlasting resolution of the problem consistent with separation of powers principles, the states should consider a constitutional amendment that reduces the danger of pervasive technologyaided surveillance and monitoring, together with a series of statutes addressing each new issue posed by technological change as …

Cops And Cars: How The Automobile Drove Fourth Amendment Law, Tracey Maclin

Faculty Scholarship

This is an essay on Professor Sarah A. Seo’s new book, Policing the Open Road: How Cars Transformed American Freedom (Harvard Univ. Press 2019). I focus on Professor Seo’s analysis of Carroll v. United States, 267 U.S. 132 (1925) and Brinegar v. United States, 338 U.S. 160 (1949). Carroll is important not only because it was the Court’s first car case. Understanding Carroll (and Brinegar, which solidified and expanded Carroll’s holding) is essential because, nearly one hundred years later, its logic continues to direct how the modern Court resolves Fourth Amendment claims of motorists. Put simply, a majority of today’s …