SignalTrace “links devices that regularly travel together, correlating them to license plate.” It is a surveillance product that will sweep up and add all sorts of Bluetooth and other data to license plate readers, linking specific devices—and people—to cars.
Your phone as a hotspot still uses the data plan, so all the data you don’t want going out still goes out. Using a hotspot eliminates a lot of the background data (set as metered network or use NetGuard, etc)
Check out for more details, it’s been a while. It’s taken me months to test this all out as I took my time, but works well
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