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X-ray vision? New technology making it a reality for $300

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X-ray vision? New technology making it a reality for $300

In this Nov. 19, 2015, photo, MIT researchers Emad Farag, left, and Fadel Adib walk through a room with chairs as a screen displays how RF-Capture is tracking their movements through the wall behind them, on the MIT campus in Cambridge, Mass. RF-Capture is a technology being developed at MIT that uses WiFi signals to see and sense through walls. (AP Photo/Scott Eisen) X-ray vision, a comic book fantasy for decades, is becoming a reality in a lab at MIT.

A group of researchers led by Massachusetts Institute of Technology professor Dina Katabi has developed software that uses variations in radio signals to recognize human silhouettes through walls and track their movements.
Researchers say the technology will be able to help health care providers and families keep closer tabs on toddlers and the elderly, and it could be a new strategic tool for law enforcement and the military.
”Think of it just like cameras, except that it’s not a camera,” said Fadel Adib, a researcher on the MIT team developing the device.
”It’s a sensor that can monitor people and allow you to control devices just by pointing at them,” he said.
Work began in 2012 to determine how wireless signals could be used to ”see” what’s happening in another room, said Katabi, who directs the MIT Wireless Center.
”At first we were just interested … can you at all use wireless signals to detect what’s happening in occluded spaces, behind a wall, couch, something like that,” Katabi said.
”It turned out that we were able to detect that. And when we figured out we could detect that, we started asking more advanced questions: Could we use it to detect exactly how people are moving in a space if they are behind a wall?
The device displays the signal on a screen, where the person’s movements can be tracked in real time. It depicts the target as a red dot moving around the room, occupying a chair and speeding up or slowing down. In this Nov. 19, 2015, photo, Massachusetts Institute of Technology researcher Chen-Yu Hsu works on a laptop as researcher Zach Kabelac, left, and professor Dina Katabi, right, watch in their lab at MIT in Cambridge, Mass. Their RF-Capture technology uses WiFi signals to see through walls, and is able to sense where a person is in a room, if a person is sitting, moving or has fallen. It also can sense heart rate and breathing rate. (AP Photo/Scott Eisen) The wireless signals used to track a person’s motions also can measure the individual’s breathing and heart rate—and potentially identify the person based on the shape of his or her skeleton, said researcher Zach Kabelac.
”The person won’t be wearing anything on them, and the person it’s tracking doesn’t even need to know the device is there,” Kabelac said. In this Nov. 19, 2015, photo, Massachusetts Institute of Technology researcher Fadel Adib sets up an RF-Capture device behind a wall in a room at MIT in Cambridge, Mass. RF-Capture uses WiFi signals to see through walls, and is able to sense where a person is in a room, if a person is sitting, moving or has fallen. It also can sense heart rate and breathing rate. (AP Photo/Scott Eisen) ”If something unfortunate happens to them, like a fall, the device will contact the caregiver that they chose to alert” by generating a text message or an email, he added.

That makes health care applications especially interesting, Katabi said. But she also sees military and law enforcement possibilities—particularly in hostage situations.
”You don’t want to send the police inside without knowing where the people are standing or where the hostages are,” she said. ”If there is someone with a gun, where they are standing?” In this Nov. 19, 2015, photo, Massachusetts Institute of Technology researchers Fadel Adib, left, and Emad Farag sit in chairs as a screen displays how RF-Capture is tracking them through the wall behind them on the MIT campus in Cambridge, Mass. RF-Capture is a technology being developed at MIT that uses WiFi signals to see and sense through walls. (AP Photo/Scott Eisen) A company set up to market the technology, now dubbed Emerald, will spin out of the MIT lab next year, with a goal of marketing the device early in 2017, and it’s expected to sell for $250 to $300, Adib said. The team is working to make the device smaller and to develop an interface that will let users configure it through a smartphone app, Katabi added.
The technology raises questions about privacy rights and intrusion, and Adib said the team gave serious thought to those implications.
”The user interface will be friendly for setting it up and using it at home, but it will be very hard to use it to track someone just by pointing it at their wall,” he said. In this Nov. 19, 2015, photo, Massachusetts Institute of Technology researcher Fadel Adib sets up the RF-Capture device behind a wall in a room at MIT in Cambridge, Mass. RF-Capture uses WiFi signals to see through walls, and is able to sense where a person is in a room, if a person is sitting, moving or has fallen. It also can sense heart rate and breathing rate. (AP Photo/Scott Eisen) In this Nov. 19, 2015, photo, Massachusetts Institute of Technology researchers, from left, Chen-Yu Hsu, Emad Farag and Fadel Adib view data from their RF-Capture device with professor Dina Katabi, right, in their lab at MIT in Cambridge, Mass. RF-Capture uses WiFi signals to see through walls, and is able to sense where a person is in a room, if a person is sitting, moving or has fallen. It also can sense heart rate and breathing rate. (AP Photo/Scott Eisen) Explore further:Low-power Wi-Fi signal tracks movement—even behind walls

© 2015 The Associated Press. All rights reserved.

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