Scientists use Wi-Fi to detect moving bodies behind walls

MIT scientists have found a new use for Wi-fi: motion detectors. WiS is a low-powered Wi-Fi based system that works similarly to sonar and radar imaging.

WiZ is being developed at MIT by Dina Katabi, a professor in MIT’s Department of Electrical Engineering and Computer Science, and her graduate student Fadel Adib.  “We wanted to create a device that is low-power, portable and simple enough for anyone to use, to give people the ability to see through walls and closed doors,” said Katabi.

By transmitting Wi-Fi signals through walls, scientists basically have X-Ray vision capable of detecting moving bodies and even heart rates at 99%