Scientists: Wi-Fi radio waves can be used to track people

Scientists: Wi-Fi radio waves can be used to track people

Science 10.20.25


Scientists in Germany have discovered that it's possible to track a person using Wi-Fi, even if they don't have a smartphone or tablet with them.

According to Professor Thorsten Strufe, radio waves can form images of people and their surroundings, similar to how cameras record light waves. However, if cameras use light, they take into account the reflections of radio waves. Even if a person doesn't have a gadget with them, active networks nearby generate enough data to determine their location. This doesn't require any new equipment—attackers can use simple routers by reading Beamforming Feedback Information (BFI) signals, which are transmitted unencrypted.

By feeding this data to an AI system, the scientists were able to recognize a person with almost 100% accuracy in just a few seconds. They also claim that this method allows for the creation of a highly accurate and detailed portrait of a person, including their posture and movements.

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