Wi-Vi is a new technology that enables seeing through walls using Wi-Fi signals. It allows us to track moving humans through walls and behind closed doors. Wi-Vi relies on capturing the reflections of its own transmitted signals off moving objects behind a wall in order to track them. Wi-Vi's operation does not require access to any device on the other side of the wall.
Can Wi-Fi signals enable us to see through walls? For many years humans have fantasized about X-ray vision and played with the concept in comic books and sci-fi movies. This project explores the potential of using Wi-Fi signals and recent advances in MIMO communications to build Wi-Vi, a device that can capture the motion of humans behind a wall and in closed rooms.
What Can Wi-Vi Do?
- Detect the Number of Moving Humans in a Closed Room
. Wi-Vi allows us to detect presence of a moving human in a closed room. It can also can determine with high accuracy up to 3 moving objects.
- Determine the Relative Locations of Moving Humans
.The technology can also determine the motion of different persons in a closed room. It can answer questions such as: Is the person moving towards the device or away from it? What is the angle of motion of a person inside a closed room relative to the location of WiVi?
- Enable Communication through a Wall without Carrying a Wireless Device
. Wi-Vi is both a transmitter and a receiver. A human can communicate with it using simple gestures without carrying or wearing any wireless device.
- Identify Simple Gestures from Behind a Wall
. Wi-Vi can detect very simple gestures made through a wall, making it the first through-wall gesture-based interface.