Key points
- EFF calls for warrants before police search stored ALPR data.
- Stored records reveal detailed movement patterns of drivers.
- A federal judge in Oklahoma recently agreed with this stance.
The short version
- Police currently search stored ALPR data without warrants.
- EFF wants courts to require probable cause for these searches.
- Historical data exposes sensitive personal location information.
The details
The Electronic Frontier Foundation states that automated license plate readers function as mass surveillance tools. These systems photograph every passing vehicle and log the time and location of each capture. This creates a searchable record of where nearly everyone drives. The organization argues that cities should not purchase these systems. For cities that already operate them, the EFF recommends shutting them down entirely.
Where these systems remain active, the EFF urges courts and state legislatures to reduce harms. A primary recommendation is requiring police to obtain a warrant before searching stored ALPR data. This would not make mass surveillance acceptable. However, it would force police to justify searches to a judge before accessing movement records.
The context
The EFF notes that officers have searched this data for improper reasons. These actions violate fundamental rights. Examples include profiling Romani people, monitoring protesters, and investigating abortions. Officers have also used the data to find immigrants for deportation. Other uses include tracking a man who complained about a deputy and stalking romantic partners. Some searches occurred for no stated reason beyond "LMAO."
A warrant requires a judge to find probable cause and specificity. Many warrantless searches of ALPR data lack both elements. The officer seeking the search decides its justification without an independent check. Stored ALPR data reveals sensitive private details about where people go and with whom. Earlier this month, a federal judge in Oklahoma agreed that warrants should be required for such searches.
What should you do?
- Monitor local legislation regarding surveillance technology.
- Review privacy policies of municipal data systems.
- Support judicial oversight of law enforcement tools.
- Attend city council meetings discussing ALPR contracts.
For customers and users
Individuals should understand that their driving habits are being recorded. This data creates a detailed history of personal movements. Users should review local laws about data retention and access. It is important to know if your city requires warrants for such searches. Be aware that this data can be used for purposes unrelated to serious crime. Consider advocating for stricter privacy protections in your community. Monitor how local agencies use this technology.
What to do and how to stay safe: EFF
- Check if your municipality has adopted ALPR systems.
- Review local ordinances regarding data retention periods.
- Support legislation requiring warrants for historical data access.
- Attend public meetings to voice concerns about surveillance.
Step-by-step guide: How Online Tracking Works: The Technical Chain from Request to Profile
General security guidance from the DataSafe Times newsroom. It is not confirmed advice from the organisations named in this story.
Frequently asked questions
Why does the EFF want warrants for ALPR data?
The EFF argues that stored ALPR data reveals sensitive private details about where people go and with whom. Warrants provide an independent judicial check on police power.
How have police used ALPR data without warrants?
Officers have used it to profile Romani people, monitor protesters, investigate abortions, find immigrants for deportation, and stalk romantic partners.
Has any court agreed with the EFF's position?
Yes, a federal judge in Oklahoma agreed earlier this month that warrants should be required for searching stored ALPR data.
