In a first, researchers use Bluetooth signals to identify and track smartphones
![Researchers tested their method to track Bluetooth fingerprints on campus. They use an off-the-shelf device to track and identify devices.](https://scx2.b-cdn.net/gfx/news/hires/2022/bluetooth-signals-can.jpg?w=1920)
A team of engineers at the University of California San Diego has demonstrated for the first time that the Bluetooth signals emitted constantly by our mobile phones have a unique fingerprint that can be used to track individuals' movements.
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