SignalTrace Adds Bluetooth Device Tracking to ALPR Systems

SignalTrace sensors will equip ALPR cameras to capture unique identifiers from mobile phones, AirPods, and smartwatches alongside license plates. According to the source, the technology shifts ALPR focus from vehicle tracking to individual identification via Bluetooth signals in passing cars (https://www.404media.co/this-company-will-add-phone-airpod-and-smartwatch-trackers-to-license-plate-readers/). ALPR deployments have expanded across U.S. jurisdictions with documented use in data sharing networks, as noted in prior analyses of camera infrastructure (https://www.eff.org/pages/automated-license-plate-readers-alpr). Device fingerprinting through Bluetooth extends existing fusion practices observed in commercial location data aggregation reported by multiple outlets (https://www.nytimes.com/2023/07/10/technology/phone-data-tracking.html).