Capture a human figure through a wall using RF signals

Cambridge, October 29. In the US, Massachusetts Institute of Technology researchers have learned to build a three-dimensional map of a neighboring room using a wireless Wi-Fi transmitter and search for people. This is reported by in connection with the materials that will be officially presented at the SIGGRAPH conference in November 2015. The device can “see” through the walls and recreate the exact silhouette of the person in the room being watched.

The device is called RF Capture and can transmit a signal to a neighboring room as well as perceive the wave reflected by the bodies. The signal reflects in different ways depending on the position of the human body. It is thus possible to recreate a clear silhouette of a person standing on the other side of the wall. This scheme recalls the principle of perception of space in bats.

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