There’s a recent story at LA Times on how Newport Beach will monitor drivers’ Bluetooth data to analyze traffic, congestion.
It’s a traffic monitoring system that receives signals from Bluetooth-enabled equipment such as cellphones and in-car hands-free devices, building a real-time picture of motorists’ routes and travel times.
This is a simple example of a real time locating system using Bluetooth devices that are already out there as opposed to, more focused, Bluetooth beacons that are specifically being tracked.