Researchers identify people through ordinary Wi-Fi routers with 99.5% accuracy — technique works with standard Wi-Fi routers
Security researchers have developed a new technique called BFId that can identify individuals using standard Wi-Fi routers with 99.5% accuracy. This method exploits unencrypted beamforming feedback information (BFI) broadcast by Wi-Fi devices, requiring no access to the network and working even if the person has no wireless device. The researchers highlight that this technology, while powerful, poses significant privacy risks and advocate for stronger safeguards before Wi-Fi sensing becomes widely adopted. AI
IMPACT Raises privacy concerns and highlights the need for safeguards in emerging Wi-Fi sensing technologies.