The DeFlock project maps license plate readers across the United States and publishes its data as open source.
ALPR Watch
ALPR Watch explains how automated license plate readers monitor movement and provides information about their use.
About ALPR Watch
ALPR Watch monitors the installation and use of automated license plate readers (ALPR / ANPR / LPR). It explains how law enforcement uses fixed cameras and mobile units to record timestamps, license plates, vehicle images, make and model, and how records can be searched or used for alerts for a specific plate.
The site provides a live feed of ALPR locations from OpenStreetMap, suspected locations from various sources, FOIA-derived records, and online and offline routing to avoid ALPR. Most of the data is attributed to the DeFlock project.
Key features
- Offline ALPR-avoiding navigation data packages for CoMaps
- Online car routing to avoid ALPR, including API
- Live feed of ALPR locations from OpenStreetMap
- Suspected ALPR locations from multiple data sources
- FOIA-derived Flock Safety records for exploration
- Explanations of how ALPR cameras record and share data
Best for: People who want to understand how ALPR systems work and locate mapped or suspected readers.
Good for
- Provides both offline data packages and online routing to avoid ALPR
- Combines OpenStreetMap entries, suspected locations, and FOIA-derived records
- Describes how cameras record timestamps, plates, and vehicle metadata
Watch out for
- Suspected locations are estimates based on various sources, not confirmed installs
- Refers users to external resources for a more complete view of operator data
ALPR Watch at a glance
- Website
- alprwatch.org
- Category
- Privacy & Security › Privacy Guides
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
ALPR Watch alternatives
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ALPR Watch FAQ
How are ALPR used?
Law enforcement uses fixed cameras and mobile units to record when a car passes, storing the timestamp, plate, and often an image, make and model. Records are searchable by the camera owner and others depending on network configuration, and some systems such as Flock Safety can notify a user when a specific plate is seen.
How can I help map ALPR locations?
Add ALPR to the map through DeFlock, submit leads on where to look for installed readers, or contribute code, documentation, or marketing materials through GitLab.
Does ALPR Watch offer offline ALPR-avoiding navigation?
Yes, it offers data packages for offline use such as CoMaps that show where ALPR are active, with an archive of available options and versions.
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