Houston Grid Watch

About Houston Grid Watch

Houston Grid Watch shows where automated license-plate readers (ALPRs), including Flock Safety cameras, are located around Houston, so residents can see what is near their own neighborhood.

Where the data comes from

• Camera locations are mapped by volunteers in OpenStreetMap (ODbL license). The map shows a saved copy and checks OpenStreetMap for a newer one about once a day.
• The list is incomplete and can be out of date. It is not an official inventory. If you spot a missing camera, you can add it to OpenStreetMap yourself.
• Basemap by OpenFreeMap, drawn with MapLibre GL JS.
• Cones show a rough facing direction, only where a volunteer recorded one. They are not real coverage areas.

The radio panel

• You paste lines of public scanner traffic. The site does not record audio and does not connect to any scanner feed.
• Each line is labeled by Claude (Anthropic's Haiku 4.5 model) with a type, a severity from 1 to 3, and a street or area hint.
• Claude is told to remove names, license plates, phone numbers and home addresses. Check the results before relying on them.

Privacy

• If you press My location, your position is used inside your browser to center the map. It is never sent to this site's server.
• Text you paste into the radio panel is sent through this site's server to the Claude API to be labeled. This site does not keep a database of it and has no accounts or ad trackers.

What this is not

• It is not affiliated with Flock Safety, any other camera maker, or any police department.
• It is not an emergency tool. In an emergency, call 911.

Who makes this

Houston Grid Watch is the first project from Tono, an early-stage software startup in Houston, founded by Antonio Lara in 2026. Tono builds tools that help residents see and understand public-safety data.

Questions or corrections: antonio@tono.dev