2 June 2026 | Zero5G.com | A new study from Germany’s Karlsruhe Institute of Technology concludes that commonly used Wi-Fi routers present serious privacy hazards.   Already in millions of homes, this hardware can be utilized to accurately identify any individual within range. In their introduction, the authors point toward the privacy implications of smart cities with WiFi providing “a robust method of identification.”

“Wireless networks are ubiquitous – at home, at work, in a smart city. With it comes WiFi sensing, the inference of information about the networks environment from its signal propagation characteristics.”

Todt, Julian & Morsbach, Felix & Strufe, Thorsten. (2025). BFId: Identity Inference Attacks Utilizing Beamforming Feedback Information. 2399-2413. 10.1145/3719027.3765062.

Link to BFId Identity Inference Attacks Utilizing Beamforming Feedback Information

Random Standard Wi-Fi Routers Can Scan Your Body to Identify Exactly Who You Are, Alarming New Research Finds

“We have shown robust identity inference with common-of-the-shelf hardware which is already in widespread adoption in many homes and public areas,” the team wrote in their paper. “With this hardware making its way into millions of homes, the privacy concerns are severe.”

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