Researchers develop a new Wi-Fi-based system to count people behind walls

Researchers of the Electrical and Computer Engineering department at the University of California Santa Barbara (UCSB) have come up with a new technique that can count the number of people in a room using nothing but Wi-Fi signals. The research paper by Saandeep Depatla and Yasamin Mostofi is titled “Crowd Counting Through Walls Using WiFi” and it describes a system that uses Wi-Fi enabled devices to send and receive the signals and figure out how many people are present in a room. It does so by measuring the loss in signal, which occurs when…
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