Wi-Fi technology can now spot you in a room by reading how you move and stand, challenging what privacy means

What if we told you that researchers at La Sapienza University of Rome have introduced a new way to identify individuals by analysing how their bodies affect Wi-Fi signals? Sounds made up, right? But it’s real. This system is called WhoFi and works without cameras, microphones, or the person carrying any device. It detects unique changes in wireless signals caused by a person’s size, shape, and movement.

How does it work?
Wi-Fi signals spread through spaces and bounce off or are absorbed by objects, including people.