Chatrie v. United States: What the Geofence Ruling Does and Does Not Decide
The Supreme Court held that police conducted a Fourth Amendment search when they acquired Okello Chatrie's Google Location History data. The Court did not decide whether the geofence warrant was reasonable, and it did not decide the rules for automated license plate reader databases. Chatrie v. United States opinion, retrieved 10 August 2026.
- Constitutional event
- SEARCH
- https://www.supremecourt.gov/opinions/25pdf/25-112_0am4.pdf | Retrieved 10 August 2026
- Data at issue
- GOOGLE LOCATION
- https://www.supremecourt.gov/opinions/25pdf/25-112_0am4.pdf | Retrieved 10 August 2026
- Warrant validity
- UNRESOLVED
- https://www.supremecourt.gov/opinions/25pdf/25-112_0am4.pdf | Retrieved 10 August 2026
- ALPR holding
- NONE
- https://www.supremecourt.gov/opinions/25pdf/25-112_0am4.pdf | Retrieved 10 August 2026
THE ALPR CLAIM STOPS AT ANALOGY
Chatrie is binding on the Google location-data search before the Court. Applying its reasoning to a plate-reader database requires a separate analysis of the records requested, query breadth, retention period, and governing jurisdiction. Opinion, retrieved 10 August 2026; ALPR system description, retrieved 10 August 2026.
What the Court decided
The holding is limited and clear: acquiring Chatrie's Location History from Google was a search because a person has a reasonable expectation of privacy in cell-phone location information. The Court said the data was more precise and more frequent than the cell-site records considered in Carpenter. Syllabus and opinion pages 13-29, retrieved 10 August 2026.
A search is not automatically unreasonable. The Fourth Circuit had not decided whether each step of this unusual warrant met the particularity and probable-cause requirements, so the Supreme Court vacated the judgment and remanded. Opinion pages 29-32, retrieved 10 August 2026.
What the Court did not decide
- It did not announce a complete warrant template for geofence requests. Opinion pages 29-32, retrieved 10 August 2026.
- It did not hold that every government request for location-related data has the same constitutional result. Opinion pages 10-33, retrieved 10 August 2026.
- It did not discuss or decide an automated license plate reader database query. Full opinion, retrieved 10 August 2026.
Why plate-reader databases are a separate question
Automated plate readers capture a plate number with the date, time, and location of an observation. Fixed and vehicle-mounted cameras can send those records to searchable databases, where retention and sharing rules vary. EFF Surveillance Self-Defense ALPR guide, retrieved 10 August 2026.
Chatrie distinguished public-road observation from location records that follow a phone into private places. That distinction can matter to an ALPR case, but it does not settle how a court should treat a long-running, aggregated plate history. Opinion discussion of public roads and private places, retrieved 10 August 2026; ALPR retention and sharing description, retrieved 10 August 2026.
Current case posture
The Supreme Court docket records the 29 June opinion, judgment issued on 31 July, and remand to the Fourth Circuit. The Supreme Court's opinion directs the lower court to address the unresolved warrant questions. Supreme Court docket, retrieved 10 August 2026; opinion, retrieved 10 August 2026.
Cunicula's ALPR legal tracker separates court holdings from pending proposals and policy claims. That distinction is necessary here because Chatrie changes the location-data baseline without deciding the plate-reader question.
Sources
- Chatrie v. United States, No. 25-112, slip opinion, retrieved 10 August 2026.
- Supreme Court docket No. 25-112, retrieved 10 August 2026.
- EFF Street-Level Surveillance: automated license plate readers, retrieved 10 August 2026.
Frequently Asked Questions
What did the Supreme Court decide in Chatrie v. United States?
The Court held that police conducted a Fourth Amendment search when they acquired Chatrie's Google Location History data. Source: https://www.supremecourt.gov/opinions/25pdf/25-112_0am4.pdf. Retrieved 10 August 2026.
Did Chatrie decide whether automated license plate reader searches require a warrant?
No. The opinion addresses Google Location History and does not decide the constitutional treatment of automated license plate reader databases. Source: https://www.supremecourt.gov/opinions/25pdf/25-112_0am4.pdf. Retrieved 10 August 2026.
Did the Supreme Court decide whether the geofence warrant was valid?
No. The Court left the warrant's particularity and probable-cause questions to the Fourth Circuit on remand. Source: https://www.supremecourt.gov/opinions/25pdf/25-112_0am4.pdf. Retrieved 10 August 2026.