Once upon a time, in their startling report titled "Bigger Monsters, Weaker Chains," ACLU analysts Jay Stanley and Barry ...

When it comes to your home internet connection, there's one question we get asked quite a bit: Does Wi-Fi travel through walls? The short answer is yes, but the long answer is a bit more complicated.

A small part of the signal goes through the wall, reflects off the person's body, and then comes back. - Fadel Adib, MIT Media Lab Discovering how to use Wi-Fi like radar ...

Wi-Fi signals travel through spaces and interact with objects, including people, by bouncing off or being absorbed. Everyone’s body alters these signals in a distinct way.

Nicknamed Wi-Peep, the device can “see” through walls, surreptitiously identifying the locations of smart watches, phones, laptops and the like, with speed and accuracy.