What is the principle of inside-out tracking technology for VR headsets? The core of this system lies in multiple cameras mounted on the headset that can capture visual features of the surrounding environment in real-time. Using computer vision and SLAM (Simultaneous Localization and Mapping) algorithms, it accurately determines the device's position and orientation in space. The device recognizes feature points in the environment and builds a virtual map, enabling millimeter-level position tracking. Notably, this technology has advanced rapidly in the past two years, with tracking accuracy and stability reaching impressive levels. Whether it is minor head movements or quick turns, the system can respond swiftly, laying a solid hardware foundation for immersive VR experiences and metaverse applications.