New "Wi-Vi" System Uses Motion Sense to "See" Through Walls
July 2, 2013 11:05 AM
comment(s) - last by
It could be used in rescue missions, police searches and even video games
Have you always wanted
? MIT researchers have developed something similar, but not exactly what you remember from Superman comics.
An MIT research team -- led by Dina Katabi, a professor in MIT’s Department of Electrical Engineering and Computer Science -- has developed a low-power and portable device that allows you to detect people through walls and closed doors.
The new system is called "Wi-Vi," and it differs from other X-ray vision-like devices because it doesn't require equipment that is too large to carry, and it doesn't require a part of the electromagnetic spectrum reserved only for the military.
Wi-Vi, as you can probably guess from its name, is capable of transmitting a low-power Wi-Fi signal to track moving beings on the other side of a wall.
It works like this: Wi-Vi uses two transmit antennas and one receiver. Both antennas transmit the same signals, except one is the inverse of the other. This means that they cancel each other out when they hit static objects, because they create identical reflections. However, when a person is moving on the other side of the wall, the reflections change according to the movement. Put more simply, when the reflections are identical, its a static object; when they change, it's a moving person, thus can be detected through a wall and distinguished from objects like a table.
As a person moves around the room on the other side of the wall, their distance from the receiver also changes, and the system calculates where they are based on the time it takes for the reflected signal to hit the person and travel back to the receiver.
This new tech could have a wide range of uses, such as rescuers trying to find people
trapped in a disaster area
; police searching a building for criminals; video game gestures, and even the general public for when they're walking in dangerous areas or at night.
This article is over a month old, voting and posting comments is disabled
RE: Wide Variety of Uses Indeed
7/2/2013 1:15:10 PM
When you are sitting there with your Noveske assault rifle, the solution is to hold still.
RE: Wide Variety of Uses Indeed
7/2/2013 1:16:29 PM
Or even better. Transmit white noise across the whole wifi spectrum. Simple jamming.
"We shipped it on Saturday. Then on Sunday, we rested." -- Steve Jobs on the iPad launch
Microsoft's Kinect, Cockroaches Used to Create Accurate Routes for Disaster Maps
June 26, 2013, 10:51 AM
New X-Ray Scanner at Airports Sees Through Clothes but Not Skin
December 5, 2006, 3:48 PM
Nail Polish May Soon be Able to Detect Date Rape Drugs
August 26, 2014, 7:57 AM
SpaceX Falcon 9-R Rocket Suffers Malfunction, Self-Destructs During Test Flight
August 23, 2014, 9:36 AM
Texas Chosen as Site for SpaceX's First Commercial Launchpad
August 5, 2014, 1:44 PM
South Carolina Prison Finds Crashed Drone Carrying Drugs, Phones
August 1, 2014, 2:49 PM
NASA's Mars 2020 Rover Gains Seven New Instruments for Exploration
August 1, 2014, 1:30 PM
NASA Opportunity Rover Breaks Record for Most Miles Traveled on Another Planet
July 29, 2014, 1:38 PM
Most Popular Articles
Numerous Leaks Detail 4.7" iPhone 6 Processor, RAM, Cellular and NFC Capabilities
August 29, 2014, 10:37 PM
Windows 9: "Upgrade Now" Button Coming for Enterprise Updates, ARM Preview in H1 2015
August 26, 2014, 8:00 PM
L.A. Unified School District’s Apple iPad Contract Canceled Following Heavy Criticism
August 26, 2014, 12:37 PM
Apple Builds Not-So-Secret Secret 3-Story Tower for iPhone 6/iWatch Unveil
August 28, 2014, 3:41 PM
Netflix Accuses Comcast of Ripping Off Customers, Files to Block Merger
August 26, 2014, 5:49 PM
Latest Blog Posts
Space Terrorism is a Looming Threat For the United States
Apr 23, 2014, 7:47 PM
Facebook Aims to Provide Internet to "Every Person in the World" with Drones, Satellites
Apr 1, 2014, 10:20 AM
Retail Mobile Sites Experience Outages in Light of Simplexity's Bankruptcy
Mar 14, 2014, 8:48 AM
Tesla vs. BMW: Who Has the Safer EV?
Feb 1, 2014, 2:56 PM
Justice Leaks Details of Next HTC One Two Flagship Phone
Dec 5, 2013, 4:04 PM
More Blog Posts
Copyright 2014 DailyTech LLC. -
Terms, Conditions & Privacy Information