People often worry about being tracked through their wireless devices, especially when using public Wi-Fi networks. However, researchers have discovered multiple methods to detect and potentially track individuals via Wi-Fi, even if they are not carrying any devices, and the widespread presence of Wi-Fi networks makes these surveillance tactics potentially universal.The researchers introduced a new identity-inference attack called BFId, which exploits beamforming – a technique standardized with Wi-Fi 5 (802.11ac). The attack is possible with commercially available hardware and tracks people rather than the devices they carry, bypassing software-based security measures.If multiple Wi-Fi devices can communicate with each other, beamforming signals can generate radio-based “images” from multiple angles, enabling the identification of people without cameras or other traditional methods. What is your take on using Wifi for surveillance ?

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