Scientists create invisibility viewing tools!

Google Glass function less 'horrible'? This technology may make some people more frightened. Because, with this device people can see invisibility.
Scientists from the Massachusetts Institute of Technology (MIT) experimented with a system they called Wi-Vi. The system is able to track objects moving behind the wall, using the wireless system is fairly inexpensive and readily available everywhere.

Wi-Vi can be embedded in a smartphone or handheld device specific. Dina Katabi, professor who developed the Wi-Vi with students Fadel Adib said, this system will be used for legal purposes or rescue during a natural disaster.
However, according to Katabi, users can use the gadget. For example, when a person is concerned there are following or stalking from behind, he could use gadgetnya to detect whether or not there are people behind the wall.

Invisibility

For now, Wi-Vi system resolution is low. As an illustration, the first Wi-Vi version is more like a radar that tracks the plane, not to show details such as the X-ray beam.
Katabi and Adib are working to develop a version with a higher resolution, so that the system could recognize faces. But earlier, he said the community needs to have a policy on how to use it. Certainly not surprised that the community and creates concerns like when it comes Google Glass.

"As with all the technology in the world, it depends on how we use them," says Katabi as reported by Computer World, Friday (28/06/2014).
Wi-Vi works by sending radio waves Wi-Fi penetrate barriers such as walls, then measure how they bounce back. It's similar to the way radar and sonar, but without the bulky and expensive and limited frequency.

Each time the Wi-Fi signal reflected off an object, shape and composition of the object will affect the reflected signal again. However, when Wi-Fi 'hit' the wall, most of the signal will be reflected on the wall. That's when the vaguely visible reflections of people who are on the other side of the wall.