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Fourth amendment

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A Few Criminal Justice Big Data Rules, Stephen E. Henderson Dec 2017

A Few Criminal Justice Big Data Rules, Stephen E. Henderson

Stephen E Henderson

As with most new things, the big data revolution in criminal justice has historic antecedents—indeed, a 1965 Presidential Commission called for some of the same data analysis that police departments and courts are today developing and implementing.  But there is no doubt we are on the precipice of a criminal justice data revolution, and it is a good time to take stock and to begin developing guidelines so that, as much as possible, criminal justice systems might reap the benefits and avoid the pitfalls of this newly data-centric world.  In that spirit, I propose ten high-level rules to guide criminal …


Testimony On Unmanned Aircraft Systems Rules And Regulations, Stephen E. Henderson Sep 2016

Testimony On Unmanned Aircraft Systems Rules And Regulations, Stephen E. Henderson

Stephen E Henderson

Chairman Barrington, Vice Chair Brooks, members of the Committee on Public Safety, Senators, and distinguished guests, I am grateful for the opportunity to speak to you today about unmanned aerial systems, or drones, and more particularly about their federal constitutional implications and what might be the constitutional restrictions on any legislation you might like to enact. I am the Judge Haskell A. Holloman Professor of Law at the University of Oklahoma, where my teaching and research focus on criminal law and procedure and privacy, including the constitutional rights pertaining thereto.

My topic is not an easy one. The constitutional law …


If You Fly A Drone, So Can Police, Stephen E. Henderson May 2016

If You Fly A Drone, So Can Police, Stephen E. Henderson

Stephen E Henderson


According to the U.S. Constitution, the more you fly your drone, the more police can fly theirs. “Come on,” you might reply, “that hoary document”—and, yes, sorry to make you the sort who drops words like hoary—“that hoary document surely says nothing about drones.” But in fact it does. At least it does as interpreted by the courts. In particular, it is how they interpret the Fourth Amendment. So, to understand this aspect of drones, we first must understand this provision of the Bill of Rights...


Ou Professor: Fourth Amendment At Heart Of Dispute Between Fbi, Apple, Stephen E. Henderson Mar 2016

Ou Professor: Fourth Amendment At Heart Of Dispute Between Fbi, Apple, Stephen E. Henderson

Stephen E Henderson

The dispute between the FBI and Apple Inc. over the unlocking of the iPhone used by one of the San Bernadino shooters is important to all Americans. And so it's good that it is getting a wide airing. But when it comes to issues that have complicated tradeoffs, it can be important not just that we have the conversation, but that we use the right words. And here the debate deserves very mixed reviews. . . .


A Fourth Amendment Theory For Arrestee Dna And Other Biometric Databases, David H. Kaye Mar 2016

A Fourth Amendment Theory For Arrestee Dna And Other Biometric Databases, David H. Kaye

David Kaye

Routine DNA sampling following a custodial arrest process is now the norm in many jurisdictions, but is it consistent with the Fourth Amendment? The few courts that have addressed the question have disagreed on the answer, but all of them seem to agree on two points: (1) the reasonableness of the practice turns on a direct form of balancing of individual and governmental interests; and (2) individuals who are convicted — and even those who are merely arrested — have a greatly diminished expectation of privacy in their identities. This Article disputes these propositions and offers an improved framework for …


Dna Database Trawls And The Definition Of A Search In Boroian V. Mueller, David H. Kaye Mar 2016

Dna Database Trawls And The Definition Of A Search In Boroian V. Mueller, David H. Kaye

David Kaye

As a general matter, once the government acquires information from a permissible search or seizure, it can use this information in later criminal investigations. Courts have applied this simple rule to uphold the indefinite reuse of DNA samples acquired from convicted offenders. This essay describes the First Circuit Court of Appeals’ reliance on the rule in rejecting a convicted offender’s claim that his DNA sample and profile had to be removed from the federal DNA databank after he completed his sentence. Acknowledging that the rule permitting reuse should not be applied mechanically, I argue that the rule's application to DNA …


A Rose By Any Other Name: Regulating Law Enforcement Bulk Metadata Collection, Stephen E. Henderson Dec 2015

A Rose By Any Other Name: Regulating Law Enforcement Bulk Metadata Collection, Stephen E. Henderson

Stephen E Henderson

In Other People’s Papers, Jane Bambauer argues for careful reform of the Fourth Amendment’s third party doctrine, providing an important contribution to an increasingly rich field of scholarship, judicial opinion, statute, and law reform.  Bambauer is especially concerned with access to bodies of third-party data that can be filtered and mined, as they can be privacy invasive but also effective and less subject to traditional investigative prejudices and limitations.  Although her article provocatively overclaims in trying to set itself apart from existing proposals, by analyzing existing constitutional and statutory law—including what I have termed a “limited” third party doctrine—and comparing …


Fourth Amendment Time Machines (And What They Might Say About Police Body Cameras), Stephen E. Henderson Dec 2015

Fourth Amendment Time Machines (And What They Might Say About Police Body Cameras), Stephen E. Henderson

Stephen E Henderson

When it comes to criminal investigation, time travel is increasingly possible.  Despite longstanding roots in traditional investigation, science is today providing something fundamentally different in the form of remarkably complete digital records.  And those big data records not only store our past, but thanks to data mining they are in many circumstances eerily good at predicting our future.  So, now that we stand on the threshold of investigatory time travel, how should the Fourth Amendment and legislation respond?  How should we approach bulk government capture, such as by a solar-powered drone employing wide-area persistent stare technology?  Is it meaningfully different …


Regulating Drones Under The First And Fourth Amendments, Stephen E. Henderson, Joseph Thai, Marc Jonathan Blitz, James Grimsley Dec 2014

Regulating Drones Under The First And Fourth Amendments, Stephen E. Henderson, Joseph Thai, Marc Jonathan Blitz, James Grimsley

Stephen E Henderson

The FAA Modernization and Reform Act of 2012 requires the Federal Aviation Administration to integrate unmanned aerial vehicles (UAVs), or drones, into the national airspace system by September of this year. Yet perhaps because of their chilling accuracy in targeted killings abroad, perhaps because of an increasing consciousness of diminishing privacy more generally, and perhaps simply because of a fear of the unknown, divergent UAV-restrictive legislation has been proposed in Congress and enacted in a number of states. Ultimately, given UAV utility and cost effectiveness over a vast range of tasks, widespread commercial use seems certain. So it is imperative …


Orwellian Surveillance Of Vehicular Travels, Sam Hanna Dec 2013

Orwellian Surveillance Of Vehicular Travels, Sam Hanna

Sam Hanna

What would someone learn about you if all your automobile travels were ubiquitously tracked beginning today? Creating an indefinite database of a person’s previous automobile travels to formulate deductions on intimate details of people's lives is precisely what law enforcement agencies are currently able to accomplish with automatic license plate recognition (“ALPR”). With the ubiquity of ALPR cameras, continuous government surveillance of automobile travels is no longer a figment of the imagination. Consequently, the judicial and legislative branches of government must embark on balancing the private and public interests implicated by this technology. Failure to set suitable boundaries around the …


Our Records Panopticon And The American Bar Association Standards For Criminal Justice, Stephen E. Henderson Dec 2013

Our Records Panopticon And The American Bar Association Standards For Criminal Justice, Stephen E. Henderson

Stephen E Henderson

"Secrets are lies. Sharing is caring. Privacy is theft." So concludes the main character in Dave Egger’s novel The Circle, in which a single company that unites Google, Facebook, and Twitter – and on steroids – has the ambition not only to know, but also to share, all of the world's information. It is telling that a current dystopian novel features not the government in the first instance, but instead a private third party that, through no act of overt coercion, knows so much about us. This is indeed the greatest risk to privacy in our day, both the unprecedented …


American Bar Association Criminal Justice Standards On Law Enforcement Access To Third Party Records, Stephen E. Henderson Dec 2012

American Bar Association Criminal Justice Standards On Law Enforcement Access To Third Party Records, Stephen E. Henderson

Stephen E Henderson

Drafted over the past six years and adopted by the American Bar Association (ABA) House of Delegates in February, 2012, these Criminal Justice Standards on Law Enforcement Access to Third Party Records provide much needed guidance to legislatures, courts, and administrative agencies having to decide how to regulate law enforcement access to existing records in the hands of third parties. It is the first framework of its kind, and it can do much to improve the current system of ad hoc protections in both state and federal systems. Decision makers are struggling to determine when to permit law enforcement access …


Real-Time And Historic Location Surveillance After United States V. Jones: An Administrable, Mildly Mosaic Approach, Stephen E. Henderson Dec 2012

Real-Time And Historic Location Surveillance After United States V. Jones: An Administrable, Mildly Mosaic Approach, Stephen E. Henderson

Stephen E Henderson

In United States v. Jones, the government took an extreme position: so far as the federal Constitution is concerned, law enforcement can surreptitiously electronically track the movements of any American over the course of an entire month without cause or restraint. According to the government, whether the surveillance be for good reason, invidious reason, or no reason, the Fourth Amendment is not implicated. Fortunately, that position was unanimously rejected by the High Court. The Court did not, however, resolve what restriction or restraint the Fourth Amendment places upon location surveillance, reflecting a proper judicial restraint in this nuanced and difficult …


After United States V. Jones, After The Fourth Amendment Third Party Doctrine, Stephen E. Henderson Dec 2012

After United States V. Jones, After The Fourth Amendment Third Party Doctrine, Stephen E. Henderson

Stephen E Henderson

In United States v. Jones, the Supreme Court unanimously rejected the proposition that the Government can surreptitiously electronically track vehicle location for an entire month without Fourth Amendment restraint. While the Court's three opinions leave much uncertain, in one perspective they fit nicely within a long string of cases in which the Court is cautiously developing new standards of Fourth Amendment protection, including a rejection of a strong third party doctrine. This Article develops that perspective and provides a cautiously optimistic view of where search and seizure protections may be headed.

More detail:

United States v. Jones, in which the …


What Alex Kozinski And The Investigation Of Earl Bradley Teach About Searching And Seizing Computers And The Dangers Of Inevitable Discovery, Stephen E. Henderson Dec 2012

What Alex Kozinski And The Investigation Of Earl Bradley Teach About Searching And Seizing Computers And The Dangers Of Inevitable Discovery, Stephen E. Henderson

Stephen E Henderson

This paper tells two stories. One concerns the investigation of a Delaware physician named Earl B. Bradley that resulted in a conviction and sentence of fourteen consecutive life terms for the sexual abuse of children. The other concerns the computer problems, both judicial and extra-judicial, of Chief Judge Alex Kozinski of the United States Court of Appeals for the Ninth Circuit. Though in a sense unrelated, they share lessons about the practicalities of computers and their search that are worth telling. As courts continue to struggle with how to cabin the searches of computers in order to minimize privacy intrusion …


Expectations Of Privacy In Social Media, Stephen E. Henderson Dec 2011

Expectations Of Privacy In Social Media, Stephen E. Henderson

Stephen E Henderson

This article, which largely tracks my remarks at Mississippi College’s Social Media Symposium, examines expectations of privacy in social media such as weblogs (blogs), Facebook pages, and Twitter tweets. Social media is diverse and ever-diversifying, and while I address some of that complexity, I focus on the core functionality, which provides the groundwork for further conversation as the technology and related social norms develop. As one would expect, just as with our offline communications and other online communications, in some we have an expectation of privacy that is recognized by current law, in some we have an expectation of privacy …


The Timely Demise Of The Fourth Amendment Third Party Doctrine, Stephen E. Henderson Dec 2010

The Timely Demise Of The Fourth Amendment Third Party Doctrine, Stephen E. Henderson

Stephen E Henderson

In what may be a slightly premature obituary, in this response to a forthcoming paper by Matthew Tokson I argue that the Fourth Amendment third party doctrine "has at least taken ill, and it can be hoped it is an illness from which it will never recover." It is increasingly unpopular as a matter of state constitutional law, has long been assailed in scholarship but now thoughtful alternatives are percolating, and it cannot – or at least should not – withstand the pressures which technology and social norms are placing upon it. Even the Supreme Court seems loath to defend …


‘Move On’ Orders As Fourth Amendment Seizures, Stephen E. Henderson Dec 2007

‘Move On’ Orders As Fourth Amendment Seizures, Stephen E. Henderson

Stephen E Henderson

If a police officer orders one to move on, must the recipient comply? This article analyzes whether there is a federal constitutional right to remain, and in particular whether a police command to move on constitutes a seizure of the person for purposes of the Fourth Amendment. Although it is a close question, I conclude that the Fourth Amendment typically does not restrict a move on (MO) order, and that substantive due process only prohibits the most egregious such orders. It is a question of broad significance given the many legitimate reasons police might order persons to move on, as …


The Technology Of Surveillance: Will The Supreme Court's Expectations Ever Resemble Society's?, Stephen E. Henderson Dec 2006

The Technology Of Surveillance: Will The Supreme Court's Expectations Ever Resemble Society's?, Stephen E. Henderson

Stephen E Henderson

For law students studying criminal procedure—or at least for those cramming for the exam—it becomes a mantra: government conduct only implicates the Fourth Amendment protection against unreasonable searches if it invades a “reasonable expectation of privacy.” This is not the contemporary definition of the word “search,” nor was it the definition at the time of the founding. But, via a well-intentioned concurrence by Justice Harlan in the famous 1967 case of Katz v. United States, it became the Court’s definition.
This lack of fealty to the English language left some questions. For example, is determining whether someone has a “reasonable …


Beyond The (Current) Fourth Amendment: Protecting Third-Party Information, Third Parties, And The Rest Of Us Too, Stephen E. Henderson Dec 2006

Beyond The (Current) Fourth Amendment: Protecting Third-Party Information, Third Parties, And The Rest Of Us Too, Stephen E. Henderson

Stephen E Henderson

For at least thirty years the Supreme Court has adhered to its third-party doctrine in interpreting the Fourth Amendment, meaning that so far as a disclosing party is concerned, information in the hands of a third party receives no Fourth Amendment protection. The doctrine was controversial when adopted, has been the target of sustained criticism, and is the predominant reason that the Katz revolution has not been the revolution many hoped it would be. Some forty years after Katz the Court's search jurisprudence largely remains tied to property conceptions. As I have demonstrated elsewhere, however, the doctrine is not the …


Learning From All Fifty States: How To Apply The Fourth Amendment And Its State Analogs To Protect Third Party Information From Unreasonable Search, Stephen E. Henderson Dec 2005

Learning From All Fifty States: How To Apply The Fourth Amendment And Its State Analogs To Protect Third Party Information From Unreasonable Search, Stephen E. Henderson

Stephen E Henderson

We are all aware of, and many commentators are critical of, the Supreme Court's third-party doctrine, under which information provided to third parties receives no Fourth Amendment protection. This constitutional void becomes increasingly important as technology and social norms dictate that increasing amounts of disparate information are available to third parties. But we are not solely dependent upon the Federal Constitution. We may have more constitutional protection as citizens of states, each of which has a constitutional cognate or analog to the Federal Fourth Amendment. As Justice Brennan urged in a famous 1977 article, those provisions should be interpreted to …


Nothing New Under The Sun? A Technologically Rational Doctrine Of Fourth Amendment Search, Stephen E. Henderson Dec 2004

Nothing New Under The Sun? A Technologically Rational Doctrine Of Fourth Amendment Search, Stephen E. Henderson

Stephen E Henderson

The Fourth Amendment to the United States Constitution prohibits unreasonable searches and seizures. Yet as interpreted by the United States Supreme Court, the Amendment places no restriction on police combing through financial records; telephone, e-mail and website transactional records; or garbage left for collection. Indeed there is no protection for any information knowingly provided to a third party, because the provider is said to retain no reasonable expectation of privacy in that information. As technology dictates that more and more of our personal lives are available to anyone equipped to receive them, and as social norms dictate that more and …