Researchers at MIT have come up with a Wi-Fi based technology to help track the movement of individuals, even when the pass behind a wall. <br />The technology, christened Wi-Vi, uses a low-power Wi-fi signal and its reflections to track movement.<br /><br />The secret behind Wi-Vi is that it uses two transmitters and a single receiver. The second transmitter's signal is the inverse of the first. Any identical reflections, such as those from static objects, therefore cancel each other out leaving only moving signals.<br />The signals can show when a subject in another room is moving away from and towards the receiver.<br /><br />Wi-Vi's inventors believe the technology could one day be used for a range of applications including search and rescue operations in disaster areas and by police to identify the number of suspects and their locations in a building before a raid.<br /><br />--------------------------------------------------------<br /><br />TomoNews is your daily source for top animated news. We've combined animation and video footage with a snarky personality to bring you the biggest and best stories from around the world. <br /><br />For news that's fun and never boring, visit our channel:<br />https://www.youtube.com/user/TomoNewsUS<br /><br />Subscribe to stay updated on all the top stories:<br />http://www.youtube.com/subscription_center?add_user=TomoNewsUS<br /><br />Stay connected with us here:<br />Facebook http://www.facebook.com/TomoNewsUS<br />Twitter @tomonewsus http://www.twitter.com/TomoNewsUS<br />Google+ http://gplus.to/TomoNewsUS
