Wi-Fi Routers Can Track People with 99.5% Accuracy: Here’s How
Using unencrypted beamforming feedback, the team identified walkers with machine learning in seconds, raising privacy concerns for most modern routers.
- Researchers at Karlsruhe Institute of Technology in Germany demonstrated Wi-Fi routers can identify people with 99.5% accuracy using beamforming feedback signals and machine learning, testing the method on 197 volunteers.
- Wi-Fi sensing infers environmental information by analyzing how radio signals reflect, scatter, and absorb when interacting with objects and people; connected devices send unencrypted feedback to routers for network optimization through beamforming.
- The BFI method dramatically outperformed older channel state information techniques, which achieved only 82.4% accuracy, and works without requiring connected devices on individuals—only that they remain within network range.
- Co-Author Julian Todt warned "This technology turns every router into a potential means for surveillance," noting unencrypted signals require no physical router access or password—only a monitoring device in the same space.
- The team presented findings last November at the ACM Conference on Computer and Communications Security and is calling on IEEE to strengthen privacy protections in the upcoming 802.11bf Wi-Fi standard.
13 Articles
13 Articles
Researchers warn new WiFi technology can identify your even without tracking your phone: ‘Means for surveillance’
Researchers at the Karlsruhe Institute of Technology warn that WiFi routers can be transformed into tracking tools, identifying individuals without connected devices
A team of scientists has confirmed that ordinary Wi-Fi routers could soon be able to discreetly identify and track people with near-perfect accuracy, according to Science Daily. Researchers in Germany warn that ordinary Wi-Fi networks could become a powerful new form of covert surveillance. Using standard radio signals and artificial intelligence techniques, they have demonstrated a system capable of identifying individuals with astonishing prec…
Identifying People Using Wi-Fi Routers - Schneier on Security
Not identifying people based on their use of Wi-Fi routers, but identifying people using Wi-Fi signals. This is accomplished through what is known as WiFi sensing, or the use of WiFi signals to infer information about a physical environment. When radio signals like WiFi travel through a space, they interact with the objects and people around them. Those signals can be reflected, scattered, or absorbed. By analyzing how the signal is expected to …
Coverage Details
Bias Distribution
- 50% of the sources are Center
Factuality
To view factuality data please Upgrade to Premium
