Wi-Fi, Cell Towers May Soon Be Spying on You Without Your Consent

Wireless radiation could be used to surveil people without their knowledge or consent, even if they aren’t wearing a “smart” device or holding a cellphone, according to the authors of a new study.

by Suzanne Burdick, Ph.D.

February 4, 2025

Wireless radiation could be used to surveil people without their knowledge or consent, even if they aren’t wearing a “smart” device or holding a cellphone, according to the authors of a new study.

The study authors — engineering faculty members with the Institute for Systems and Computer Engineering, Technology and Science at the University of Porto, Portugal —  posted their report Jan. 24 on the Cornell University open-access research website, arXiv.

The study showcases hardware the authors designed that leveraged ambient wireless radiofrequency (RF) radiation to detect and render a visual image of human activity — such as waving a hand or a person’s breathing rate — with over 90% accuracy.

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