One of Superman trademarks is the x-ray vision, which allows the hero to look through all the items, with rare exception.
Researchers from the Massachusetts Institute of Technology (MIT), which, for tracking of moving objects behind the wall have decided not to use X-rays but radio waves . Dubbed Wi-Vi system can be integrated into a regular smartphone or other portable device and used in search and rescue operations, for example.
But Wi-Vi can be useful not only to rescue specialists , The project manager believes that ordinary consumers can use technology, for example, in order to look around the corner in the dark . At the same time, Wi-Vi is unlikely to enter service voyeurs: the resulting image has low resolution and makes it impossible to consider the details. However, Professor Katabami promises that in the future technology will recognize faces.
The principle of the technology Wi-Vi can be compared to the active sonar device that detects the reflected or scattered underwater object signal emitted by its sonar side. However, instead of the sound pulses Wi-Vi sensor capable of detecting radio waves reflected from objects. Characteristically, Wi-Vi signal emits two, one of which is the inverse of the other. Reflecting from stationary objects (such as walls), they cancel each other, while the reflection from moving subjects such compensation does not occur.
The main advantages of Wi-Vi to radar, sonar, and other ways to see "through walls" is the price, energy efficiency and physical size. Wi-Vi apparatus may be implemented as an integrated circuit suitable for use in mobile devices. The cost of the solution is slightly higher than the price of the module Wi-Fi, says catabolism. Related Products :
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