The Supreme Court Just Lit a Fuse Under Flock's License Plate Camera Empire

Lee Schmidt and Crystal Arrington had a simple desire: to navigate the streets of Norfolk, Virginia, without a private government contractor documenting their every movement. This desire transformed them into the lead plaintiffs of a pivotal Fourth Amendment legal battle. While their case focuses on license plates, a recent Supreme Court decision—which didn't even involve cameras—has entered the fray as a powerful, unexpected ally.

The Infrastructure of Surveillance

In 2023, the Norfolk police department implemented a partnership with Flock Safety, installing approximately 175 automated license plate reader (ALPR) camera clusters throughout the city.

The technology is more than just a camera; it is a sophisticated data-collection engine. Flock utilizes infrared imaging combined with onboard AI to capture:

• Plate Numbers
• Timestamps
• Precise Locations

Beyond the plate, the system generates what is known as a Vehicle Fingerprint. This allows law enforcement to track cars even if the plate is missing or obscured.

The "Vehicle Fingerprint" Components

Under Virginia law, Norfolk retains this data for a maximum of 21 days, and police officers are permitted to query this database without obtaining a warrant.

The Legal Battle: Schmidt v. Norfolk

In October 2024, supported by the Institute for Justice, Schmidt and Arrington filed suit. They argued that a city-wide grid of cameras constitutes a warrantless search under the Fourth Amendment.

The Initial Setback

In January 2026, a federal judge in the Eastern District of Virginia ruled in favor of the city. The court's reasoning was based on the scale of the surveillance:

Because the system only kept data for 21 days and utilized 175 clusters, it did not constitute the "exhaustive surveillance" that the Supreme Court had previously expressed concern over in the 2018 Carpenter decision.

The case was then appealed to the Fourth Circuit.

The Battle of the Amici

The appeal attracted a wide array of "friends of the court" (amici curiae):

• The Privacy Coalition: The ACLU, ACLU of Virginia, and the Electronic Frontier Foundation (EFF) argued that these networked databases allow for retrospective searches that can cross jurisdictional lines.
• The Policy Experts: The Cato Institute and the Electronic Privacy Information Center (EPIC) emphasized that while one camera is unremarkable, a 175-camera grid creating a searchable archive is a fundamentally different constitutional issue.
• The State Defense: South Carolina, along with 15 other states and D.C., argued that license plates are visible to anyone on the street, meaning there is no "reasonable expectation of privacy."

The "Fuse": United States v. Chatrie

On June 29, 2026, the Supreme Court issued a ruling in a case that seemed unrelated: United States v. Chatrie.

The Facts of the Case: Following a 2019 credit union robbery in Midlothian, Virginia, investigators used a "geofence warrant." They ordered Google to provide Location History for every mobile device within $\approx 150\text{m}$ of the crime scene. This process eventually identified Okello Chatrie.

The Ruling: In a 6-3 decision, the Court ruled that obtaining this location data constituted a Fourth Amendment search. Justice Elena Kagan wrote for the majority, while Justice Amy Coney Barrett dissented.

The Critical Nuance

The government argued that the search was acceptable because it only took a "narrow slice" of a larger dataset. The Supreme Court rejected this. They reasoned that once the Fourth Amendment is triggered, the size of the "bite" taken out of the database is irrelevant.

Why This Changes Everything for Flock

This ruling is a direct hit to the defense used by Norfolk. The city's original victory relied on the idea that a 21-day window was too small to be "exhaustive."

The "Small Slice" Defense: "We only keep data for 21 days, so it's not a total surveillance state." $\rightarrow$ SCOTUS: Irrelevant. If it's a search, the duration doesn't excuse the lack of a warrant.

Furthermore, the legal ground has shifted:

1. A 2024 Fourth Circuit panel had previously claimed geofence data wasn't a search.
2. That opinion was vacated by the full Fourth Circuit.
3. The subsequent en banc ruling was wiped out by the Supreme Court on June 29.

The precedent Norfolk's allies relied upon has effectively vanished.

The Remaining Legal Hurdles

Despite the Chatrie ruling, the Flock empire isn't gone overnight. There are still significant distinctions:

• Technology Gap: Chatrie involved cell phones; Flock involves stationary cameras.
• The Knotts Precedent: United States v. Knotts (1983) established that drivers on public roads have no reasonable expectation of privacy regarding their movements from point A to point B.

Summary of the Legal Conflict

• Public Visibility: License plates are visible to all.
• Aggregation: 175 cameras create a "dragnet" effect.
• Duration: Does a 21-day limit protect the city? (Now doubtful).
• Final Verdict: Pending Fourth Circuit decision.