AI Can See People Through Walls Using the Invisible Radio Waves Surrounding Us

The information age has generated far more data than humanity can ever hope to manually process, but with the help of artificial intelligence, that avalanche of data is now revealing itself to be far more useful than we ever thought possible. The omnipresent wireless signals that keep us connected can now be used like X-rays to see and track the movements of people, even when hidden behind walls. Though they're invisible to the human eye, radio waves still bounce off of human bodies as the wireless signals emanate out from broadcast antennas. How those radio signals bounce and scatter can be measured, and researchers at MIT's Computer Science and Artificial Intelligence Laboratory (CSAIL) were able to train a neural network to extract the positions and movements of people as they interfere with radio frequency (RF) signals. Like babies, neural networks need to be trained on what to look for when analyzing the world.