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Scientists Can Now Use WiFi to See Through People’s Walls

This won’t get creepy.


  • Researchers at Carnegie Mellon University can map human bodies through walls using WiFi signals.
  • The technology tracks key points on the body for detection, extending previous research into using WiFi signals to locate humans.
  • The study’s authors position the breakthrough as helpful to privacy, even if it opens the possibilities for much easier, cheaper human tracking.

It isn’t immediately clear how using only a WiFi signal to track human movement through walls improves personal privacy … but that’s what a new study from Carnegie Mellon University claims.

In a recently published paper, the researchers expanded on the study of employing WiFi signals to map human movement, especially in low-light situations that make using other technologies less than desirable. They write:

“We developed a deep neural network that maps the phase and amplitude of WiFi signals to UV coordinates within 24 human regions. The results of the study reveal that our model can estimate the dense pose of multiple subjects, with comparable performance to image-based approaches, by utilizing WiFi signals as the only input.”

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