In this paper we show that wi fi can also extend our senses enabling us to see moving objects through walls.
See through walls with wifi pdf.
Wi fi signals are typically information carriers between a transmitter and a receiver.
To this end the paper introduces wi vi 2 a see through wall device that employs wi fi signals in the 2 4 ghz ism band.
Wi vi limits itself to a 20 mhz wide wi fi channel.
We can also identify simple gestures made behind a wall.
In particular we can use such signals to identify the number of people in a closed room and their relative locations.
In particular we can use such signals to identify the number of people in a closed room and their relative locations.
In this paper we show that wi fi can also extend our senses enabling us to see moving objects through walls and behind closed doors.
British engineers from university college london have developed a passive radar system that can see through walls using the wifi signals generated by wireless routers and access points.
In this paper we show that wi fi can also extend our senses enabling us to see moving objects through walls and behind closed doors.
See through walls with wi fi by fadel adib submitted to the department of electrical engineering and computer science on may 22 2013 in partial fulfillment of the requirements for the degree of master of science in computer science and engineering abstract wi fi signals are typically information carriers between a transmitter and a receiver.