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 2:08:37 PM
A "personal firewall" if you will.
RE: Wide Variety of Uses Indeed
7/3/2013 2:04:47 PM
Like FaceBlock? I'm glad I invested in them before they got big.
"The Space Elevator will be built about 50 years after everyone stops laughing" -- Sir Arthur C. Clarke
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
Star Wars Spinoff Film "Rogue One", Theme Park Attractions Announced
August 17, 2015, 12:20 PM
SpaceX Falcon 9's Seventh Supply Mission to ISS Ends w/ Fiery Stage 1 Explosion
June 28, 2015, 1:10 PM
Cool Science Video: Glowing Millipede Prowls the Nevada Desert
May 18, 2015, 12:00 PM
Newly Discovered Costa Rican Glass Frog is Kermit's Doppelgänger
April 22, 2015, 11:26 AM
Researchers Hope to Find "Exotic" Lifeforms Inside Crater of Dinosaur Killing Meteor
April 14, 2015, 8:47 PM
Mathematician's Sociological Formulation May Explain the "Hipster Paradox"
April 14, 2015, 1:13 PM
Most Popular Articles
Samsung Gear S2 Borrows Circular Icons From Apple Watch
August 21, 2015, 2:48 PM
Kentucky Man Faces up to 10 Years in Prison for Shooting Drone Trespasser
August 13, 2015, 2:58 PM
Snapchat Made $3-5 Million Last Year, But That's Not as Bad as it Sounds
August 19, 2015, 12:25 PM
Exclusive: If Intel and Micron's "Xpoint" is 3D Phase Change Memory, Boy Did They Patent It
July 29, 2015, 10:52 PM
Future of Lumia Uncertain as Microsoft Lays Off 2,300, Closes 1 of 3 Finnish Offices
August 24, 2015, 6:14 PM
Latest Blog Posts
Sceptre Airs 27", 120 Hz. 1080p Monitor/HDTV w/ 5 ms Response Time for $220
Dec 3, 2014, 10:32 PM
Costco Gives Employees Thanksgiving Off; Wal-Mart Leads "Black Thursday" Charge
Oct 29, 2014, 9:57 PM
"Bear Selfies" Fad Could Turn Deadly, Warn Nevada Wildlife Officials
Oct 28, 2014, 12:00 PM
The Surface Mini That Was Never Released Gets "Hands On" Treatment
Sep 26, 2014, 8:22 AM
ISIS Imposes Ban on Teaching Evolution in Iraq
Sep 17, 2014, 5:22 PM
More Blog Posts
Copyright 2015 DailyTech LLC. -
Terms, Conditions & Privacy Information