This post summarizes a decision released by the United States Supreme Court on March 25, 2021.
fourth amendment
Conducting Surveillance and Collecting Location Data in a Post-Carpenter World, Part I
Two years have passed since the Supreme Court held in Carpenter v. United States, 585 U.S. ___, 138 S.Ct. 2206 (2018), that the government carried out a Fourth Amendment search when it obtained historical cell site location information (CSLI) for the defendant’s phone from a wireless carrier. Relying in part on the view expressed by five concurring justices in United States v. Jones, 565 U.S. 400 (2012), that individuals have a reasonable expectation of privacy in the whole of their physical movements, the court determined that allowing the government access to at least seven days of historical cell-site records contravenes that expectation, even when the records are generated for commercial purposes and held by a third party.
The Carpenter majority characterized its decision as “a narrow one” and noted that it was not expressing a view on “real-time CSLI or ‘tower dumps,’” disturbing the traditional application of the third-party doctrine, or “call[ing] into question conventional surveillance techniques and tools, such as security cameras.” Id. at 2220. Dissenting justices, in contrast, characterized the court’s reasoning as “fractur[ing] two fundamental pillars of Fourth Amendment law,” and “guarantee[ing] a blizzard of litigation while threatening many legitimate and valuable investigative practices upon which law enforcement has rightfully come to rely.” Id. at 2247. (Alito, J., dissenting).
Lower courts have applied and distinguished Carpenter in a number of cases involving electronic surveillance and the obtaining of location and other types of information from third parties. This post, the first in a three-part series, summarizes post-Carpenter decisions relating to surveillance by pole camera and tower dumps. The second post in this series will examine post-Carpenter rulings on the obtaining of real-time surveillance through GPS or CSLI. The third post will consider the use of cell site simulators and the obtaining of other information about a person’s on-line activities or accounts from third parties. After reading all three, you can decide for yourself whether Carpenter’s progeny has bolstered the majority’s view of its limitations or has borne out the dissent’s warnings regarding its reach.
Proms and PBTs
Spring is only a few weeks away. Soon preparation will begin for the rites of the season, among them pruning, planting, and, of course, prom.
A few weeks ago, I chaperoned a dance at my son’s high school. (I elected not to tell him that I was chaperoning, so you can imagine his reaction when he saw me there. For more about that, please check out my parenting blog.) When I walked into the gymnasium, I saw tables laden with dozens of bright yellow flashlight-shaped devices. The school had not stockpiled flashlights for gazing into dark corners. Instead, these were portable breath testing instruments awaiting samples of air drawn from the deep lungs of teenagers. Every student seeking admission to the dance was required to submit a breath sample. Only students who registered no alcohol concentration were eligible to attend the dance.
After the dance, someone asked me whether it was lawful for a school to require students to submit to a breath test before admitting them to a school function. My answer? Yes. My reasoning? See below.
Is the Exigent Circumstances Doctrine an Exception to the Warrant Requirement, or Something More?
I have long thought of the exigent circumstances doctrine as an exception to the warrant requirement – it allows a search to be conducted when probable cause is present but it is impractical for officers to take the time to obtain a search warrant. That understanding was shaken when I read Phil Dixon’s summary of United States v. Curry, 937 F.3d 363 (4th Cir. 2019). The majority in Curry ruled that exigent circumstances allowed officers to search several men without probable cause or even reasonable suspicion because they were walking away from an area where shots had just been fired. In other words, the court took the position that exigent circumstances excused not only the lack of a warrant, but also the lack of individualized suspicion. Have I been mistaken all these years?
NC Supreme Court Weighs in on State v. Terrell and Private Search Doctrine
The North Carolina Supreme Court held in State v. Terrell, __ N.C. __ (Aug. 16, 2019), that a private party’s limited search of a defendant’s thumb drive did not frustrate the defendant’s legitimate expectation of privacy in the entire contents of the electronic storage device. The detective who searched on the heels of the private party could not be virtually certain that he would find nothing else of significance on the device or that his search would do no more than corroborate what the private searcher had told him. Thus, the court concluded that the detective could not lawfully search additional folders on the thumb drive without a warrant after the private party turned the device over to law enforcement.
Geofencing Warrants
WRAL has several stories up about geofencing warrants. One major article is here. It describes a search warrant obtained by the Raleigh Police Department in a murder case. The warrant ordered “Google [to] hand over the locations of every [mobile] device within the confines of [a defined geographic area] during a specified time period.” In a nutshell, the police were trying to figure out who was near the scene of the crime when the murder took place and asked Google to comb its data banks to find out. This post is intended to start a conversation about warrants of this kind.
May Search Warrants for Cell Phones Include Connected Cloud Services?
While preparing to teach a recent class about search warrants for digital devices, I spoke with a number of experts in digital forensics. Each conversation was very helpful. Almost all of them touched on an issue I’d never previously considered: whether search warrants for cell phones do or may include the authority to search connected cloud services.
Warrantless Use of Drones
WRAL recently reported that “the Johnston County Sheriff’s Office . . . flew a drone over [private] property . . . to locate [stolen construction] equipment.” According to the story, the overflight may have been conducted without a warrant as “[t]here was no . . . warrant on file at the Johnston County Courthouse.” Can they do that?
Update on Community Caretaking
The court of appeals just decided another case on the community caretaking doctrine. It’s the fourth published community caretaking case in the last five years, and there have been a couple of unpublished ones as well. The activity in the appellate division suggests that the doctrine is being invoked much more frequently in the trial courts. This post explains the new case and provides a quick refresher on the older ones.
Sixth Circuit Holds that Chalking Vehicle Tires is a Fourth Amendment Search
The Court of Appeals for the Sixth Circuit ruled last week that city parking enforcement officers’ use of chalk to mark the tires of parked vehicles to track how long they have been parked is a Fourth Amendment search. And, on the facts before it, the court held that the city failed to show that the search was reasonable.