http://hn.vernccvbvyi5qhfzyqengccj7lkove6bjot2xhh5kajhwvidqafczrad.onion/stories/40958946
The signature is based on physical layer characteristics, according to the linked paper : « They result in two measurable metrics in BLE and WiFi transmissions: Carrier Frequency Offset (CFO) and I/Q imperfections, specifically: I/Q offset and I/Q imbalance. ». Yes, you would probably need SDR to do this tracking, but SDR are generally not this expensive. codetrotter 11m From the article: > Mobile devices, including phones, smartwatches and fitness...