Elektor Team

See Through Walls with Wi-Fi

December 10, 2013 | 14:37
See Through Walls with Wi-Fi
See Through Walls with Wi-Fi

For many years humans have fantasized about X-ray vision and played with the concept in comic books and sci-fi movies. MIT’s Wi-Vi project explores the potential of using Wi-Fi signals and recent advances in MIMO communications to capture the motion of humans behind a wall and in closed rooms.

Wi-Vi allows detection of up to three moving humans in a closed room. It is capable of determining the direction of movement, towards the device or away from it, and the angle of motion. A human can communicate with the Wi-Vi system using simple gestures without carrying or wearing any wireless device. The system can even detect very simple gestures made through a wall, making it the first through-wall gesture-based interface.

Possible applications of the technology are intrusion and ambush detection, victim finding Under collapsed structures, motion sensing for controlling of heating/cooling and lighting systems, household appliances, and non-invasive monitoring of children and elderly. Wi-Vi also enables a new dimension for input-output devices in gaming which does not suffer from occlusion and works in non-line-of-sight.

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