A Simple Router Is a Machine Capable of Identifying Humans with Nearly 100% Accuracy. Or So These Researchers Say

Researchers at Karlsruhe Institute of Technology showed that WiFi beamforming data can identify people with near-perfect accuracy in lab tests.

The AI model learned to recognize presence and movement patterns from ordinary router signals in a controlled environment.

The method is not ready for real-world deployment, but it raises major privacy concerns about passive WiFi-based surveillance.