Flock's Gunfire Alerts Raise a New Fourth Amendment Question Gun owners should be paying attention to how police use gunfire microphones in conjunction with license plate cameras. Reason · Sep 22
Use of Flock Cameras Is Not a Fourth Amendment "Search," District Court Rules The first post-Chatrie ruling on the question. Reason · Sep 16
New tech adds phone tracking to license plate readers, associating devices with identifiable cars Imagine that you share a ride to work with the same colleague most mornings. As it passes by a license plate reader, the camera records the car, which can be linked through vehicle records to its registered owner. Beside it, another sensor detects signals broadcast by devices traveling nearby, such… The Conversation · Aug 11
The Supreme Court's 'Reasonable Expectation of Privacy' Test Defies Expectations Neil Gorsuch proposes an alternative to a Fourth Amendment standard that has proven to be an unreliable safeguard against government snooping. Reason · Jul 8
U.K. Might Force Social Platforms To Give Government-Backed Media Special Status Plus: The Democrats' Project 2029 would ban minors from social media, the Supreme Court protects private data in geofence warrant ruling, and more... Reason · Jul 6
Who Owns Your Data? The Supreme Court could be poised to decide whether it's you or Big Tech companies. Reason · Jun 24
A Few Thoughts on the Chatrie Oral Argument On the whole, a good morning for the government. Reason · Apr 27
Links to My Posts on Chatrie v. United States, the Geofence Warrant Case Fourteen posts in all, from 2022 to the present. Reason · Apr 25
The Slowing of Fourth Amendment Law, and Now Advisory Opinions: A Comment on Chatrie v. United States The second in a series. Reason · Apr 16
A Narrow Resolution on Geofence Warrants?: A Thought on Chatrie The first in a series. Reason · Apr 14
My Amicus Brief in the Geofence Warrant Case, United States v. Chatrie The case will be argued April 27th. Reason · Apr 2
Final Version, "Data Scanning and the Fourth Amendment" Especially relevant for United States v. Chatrie, the geofence warrant case. Reason · Feb 24
Reason · May 3, 2025 The Fourth Circuit's Geofencing Case Ends Not With a Bang But A Whimper Fifteen judges produce eight separate opinions—but no view gets a majority.
Reason · Nov 1, 2024 Fourth Circuit Votes to Rehear Its Geofence Warrant Case An update in United States v. Chatrie, with a thought on modern Fourth Amendment litigation.
Reason · Aug 13, 2024 The Fifth Circuit Shuts Down Geofence Warrants—And Maybe A Lot More An astonishing ruling, and one that creates splits on two differerent issues.
Reason · Jul 10, 2024 Accessing Google Location History Records Is Not a Search — At Least When Limited — Fourth Circuit Rules An important case on "The Digital Fourth Amendment"
Reason · Dec 9, 2023 The First Geofence Warrant Case Reaches the Federal Court of Appeals United States v. Chatrie is heard in the Fourth Circuit.
Reason · Mar 16, 2022 "Geofence Warrants Are the Future (and That's a Good Thing)" From Prof. Jane Bambauer (Arizona).