An open-source tool called RuView is drawing widespread attention for demonstrating how Wi-Fi signals can detect human movement through walls.

A new open-source project called “RuView” is drawing widespread attention online for demonstrating how ordinary Wi-Fi signals can be used to detect human movement, breathing patterns, and even body posture through walls without cameras or wearable devices.

The project surged on GitHub this week after social media posts showcasing its capabilities accumulated hundreds of thousands of views.