Massachusetts State Police must disclose license plate reader locations, judge rules
Rule Changes Boston, MA localSuffolk Superior Court ruling ends ACLU's five-year fight over surveillance camera transparency
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Overview
Updated YesterdayMassachusetts State Police must tell the public where its automatic license plate reader cameras sit and when troopers search the database. A Suffolk Superior Court judge ruled that the agency cannot hide those records behind public safety exemptions.
The decision caps a five-year fight by the ACLU of Massachusetts and lands as at least 25 towns cancel or suspend contracts with Flock Safety, the surveillance vendor at the center of a national backlash. Four officers face investigation for using ALPR databases to track victims and former partners.
Why it matters
If it survives appeal, Massachusetts residents will finally learn where state police track their vehicles, and other states get a transparency template.
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People Involved
Organizations Involved
State affiliate of the ACLU that sued State Police over ALPR records.
Maintains a statewide network of 80–100 ALPR cameras using Vigilant Solutions technology.
Atlanta-based company selling ALPR cameras; at least 25 Massachusetts towns cancelled contracts.
Provides the ALPR system used by Massachusetts State Police.
Timeline
2008 September 2026
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Ruling publicized; State Police weighs appeal
Latest LegalNews spreads via ACLU release and Reddit; State Police says it is reviewing the decision.
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Suffolk Superior Court grants summary judgment
Court rulingJudge rules MSP must disclose camera locations and redacted audit logs. Finds agency failed to justify withholding.
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Officer misuse investigations surface
InvestigationFour officers at three departments face probes for using ALPR databases to track personal acquaintances.
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ACLU sues State Police
LawsuitAfter MSP refuses to release records, ACLU files public records lawsuit in Suffolk Superior Court.
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ACLU files public records request
Public recordsAfter the SJC ruling, ACLU requests ALPR camera locations and audit logs from State Police.
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SJC rules on camera surveillance
Court rulingMassachusetts Supreme Judicial Court rules extensive camera surveillance may trigger constitutional protections.
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ALPR technology deployed in Massachusetts
DeploymentAutomatic license plate reader cameras enter use across the state's roadways.
Historical Context
2 moments from history that rhyme with this story — and how they unfolded.
Stingray cell-site simulator secrecy (2011–2015)
Police departments across the U.S. used Stingray devices, which impersonate cell towers to capture phone locations and data. The FBI required agencies to sign nondisclosure agreements, keeping the technology secret even from judges and the public. ACLU affiliates filed records requests and lawsuits to uncover basic facts about the devices.
Records disclosures forced several departments to release policies and admit Stingray use. Some states passed laws requiring warrants.
Stingray secrecy became a template for the broader fight over police surveillance transparency, prompting courts and legislatures to demand disclosure of automated tracking tools.
Like ALPR cameras today, Stingrays were a police surveillance technology whose basic parameters were hidden from the public until litigation forced disclosure.
Carpenter v. United States (2018)
The Supreme Court ruled 5-4 that the government needs a warrant to access months of cell-site location records from a wireless carrier. Chief Justice John Roberts wrote that such records give police an all-encompassing view of a person's movements.
Police must obtain a warrant for cell-site location records, a major privacy win.
Courts have extended the reasoning to other location-tracking technologies, including GPS and some camera networks.
The 2020 Massachusetts SJC ruling the ACLU relies on drew on Carpenter's logic about accumulated location data.
