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New method identifies individuals through Wi-Fi disruptions

Researchers have developed a technique that can uniquely identify people based on how their bodies affect Wi-Fi signals.

July 23, 2025 at 04:21 PM

Scientists develop method to identify people by how their bodies disrupt Wi-Fi

A new study suggests unique body signatures can be detected through Wi-Fi signals.

Scientists reveal ability to identify individuals through Wi-Fi disruption

Researchers at La Sapienza University of Rome have introduced a technique that identifies individuals based on how their bodies modify Wi-Fi signals. This method, named WhoFi, is not only innovative but also raises serious privacy concerns. Unlike traditional biometric systems that use visual or physical identifiers, WhoFi relies on the way Wi-Fi signals interact with the environment. By analyzing these interactions, it claims to achieve up to 95.5 percent accuracy in re-identifying individuals without the need for any identifiable devices. While this technology presents fresh opportunities for human sensing, it invites significant scrutiny over ethical usage and potential for covert surveillance.

Key Takeaways

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WhoFi can identify individuals through Wi-Fi signal disruption.

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This method achieves up to 95.5 percent accuracy in re-identification.

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It offers a less invasive alternative to traditional biometric systems.

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Debate over ethics intensifies with the potential for covert tracking.

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Wi-Fi sensing may operate without individuals’ knowledge or consent.

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The technology remains in academic research with no commercial plans yet.

"The core insight is that as a Wi-Fi signal propagates through an environment, its waveform is altered by the presence and physical characteristics of objects and people along its path."

This quote highlights the fundamental principle behind the WhoFi technology.

"While WhoFi does not directly capture personal data, the potential for misuse exists if safeguards are not in place."

This statement underscores the ethical concerns surrounding the technology.

The introduction of WhoFi represents a shift in how we think about both technology and privacy. As Wi-Fi becomes ubiquitous, the implications of tracking individuals without their consent bring forth critical conversations about surveillance. While proponents argue this offers a less invasive alternative to visual tracking, the lack of awareness among individuals could facilitate a troubling development in mass surveillance. The debate is no longer just about what technology can do but also about the ethical boundaries we are willing to accept. The distance between innovation and privacy could soon become shorter as such technologies move from research to practical application.