ELI5: Explain Like I'm 5

VR positional tracking

VR (virtual reality) positional tracking is a way to track where you are in a virtual world. It uses sensors to detect when you move and then updates the virtual world so it matches your real-world movements. For example, if you walk forward in the virtual world, the sensors will detect this movement and the virtual world will move forward with you. This lets you interact with the virtual world just like you would with the real world.