Research Identifies People via Wi-Fi Using Biometric Signature

Study Reveals Wi-Fi Identification Technology

Researchers from Sapienza University of Rome in Italy have developed an experimental system that can identify individuals through Wi-Fi signals, even with walls between them. The technology, called WhoFi, transforms the distortion of wireless waves by the human body into a unique biometric signature.

System Effectiveness in Indoor Environments

The study, published in August 2025, presents an accuracy rate of 95.5% in distinguishing individuals in enclosed spaces, regardless of lighting or visibility. This precision is due to the interaction of Wi-Fi signals with the body, including internal structures such as bones and tissues, creating unique patterns for each person.

Functioning of WhoFi Technology

In practice, the combination of standard routers and advanced machine learning algorithms enables the identification and tracking of human movements without the use of cameras. The authors of the study assert that, being a non-visual method, this approach is potentially less invasive than traditional surveillance systems.

Concerns About Privacy and Ethics

Privacy experts analyze the advancement with caution, considering the current scenario filled with cameras, sensors, and digital tracking. The possibility of invisible monitoring within homes raises new ethical discussions. Although the project is still restricted to an academic environment, it fits into a trend of technologies that, after research, eventually reach the market.

Future Perspectives

The WhoFi technology illustrates a possible future where the identification and monitoring of individuals become more sophisticated. If developed for commercial use, it will be essential to adequately address privacy and ethical concerns in its implementation.