The X-ray Vision of Wi-Fi

Did you know that the Wi-Fi signals we use daily at home or in cafes can measure breathing and heartbeats of people behind walls? 'Wi-Fi sensing,' a recently highlighted technology, analyzes the subtle changes in radio waves reflected off a person's body. Without separate cameras or wearable devices, AI interprets the reflected radio wave patterns to identify a person's location, posture, respiratory rate, and heart rate in real-time. While it eliminates privacy concerns associated with cameras, it's being utilized as a cutting-edge technology to detect falls in elderly individuals living alone or rescue people in collapsed structures. Essentially, the radio waves that used to connect us to wireless internet have now evolved into 'see-through sensors' that penetrate walls.