Blotter

Blotter provides a real‑time map of police scanner activity for Los Angeles County, visualizing dispatch events as they occur. Users can view a live geographic display of calls, with each incident plotted on the map at the moment it is broadcast. The interface also offers a searchable transcript archive, allowing users to locate specific communications or review past events by keyword, time, or location.

The tool is aimed at developers, researchers, and hobbyists who need access to live public safety data for analysis, monitoring, or integration into other applications. By exposing both the spatial and textual components of police radio traffic, it supports custom queries and the creation of visualizations or alerts based on the underlying data.

Blotter is currently in an experimental stage, meaning its features and data sources may evolve. It focuses on delivering a straightforward way to explore and query real‑time police dispatch information without requiring specialized hardware or separate scanner services.