This Wi-Fi system can detect if someone is moving behind wall
Technology
Wi-Fi DensePose is a new open-source project that uses Wi-Fi signals to detect if someone's moving behind a wall.
Developed by programmer ruvnet, it reads changes in Wi-Fi waves and turns them into simple digital skeletons in real time, with no cameras or visuals involved.
If you're curious, the code is up on GitHub.
The tech could help in search-and-rescue operations
The system relies on special hardware like ESP32-S3 microcontrollers to pick up tiny shifts in Wi-Fi signals (called Channel State Information) caused by motion.
This tech could help in health care or search-and-rescue, but there are privacy worries since it can spot people without their knowledge.
Still, since it only shows abstract motion — not actual images — it is less invasive than traditional surveillance cameras.