Home Routers Researchers used Wi-Fi signals to see through walls. Game-changing breakthrough? Or privacy nightmare waiting to happen?
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Researchers used Wi-Fi signals to see through walls. Game-changing breakthrough? Or privacy nightmare waiting to happen?

Scientists have engineered a technology that lets people read letters and see objects through walls using Wi-Fi signals.

The system, developed by researchers with UC Santa Barbara, traces the edges of objects on the other side of solid barriers, including English letters of the alphabet. In one experiment, for example, the team used the technology to decipher the word “BELIEVE” from the other side of a wall, with letters imaged one by one. 

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Silence Dogood

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