This repository is a collection of Unity sample scenes that demonstrate the Meta Quest Passthrough Camera API for Quest 3/3S and Quest Pro. It provides five distinct sample scenarios: a live camera feed viewer (CameraViewer), camera-to-world coordinate mapping for debugging spatial relationships (CameraToWorld), ambient brightness estimation from the camera feed (BrightnessEstimation), real-time object detection using a YOLO model via Unity Sentis (MultiObjectDetection), and real-time GPU shader effects applied to the camera texture (ShaderSample). The architecture follows typical Unity XR patterns: each sample is a separate scene with a shared Meta XR camera rig, passthrough access via a common prefab, and a start menu scene for navigation. The codebase is not a data pipeline or research project; it is a set of application-level demos tightly integrated with Oculus/MetaXR SDK features. Key reusable components include a debug UI builder, a Sentis model conversion editor tool, an input manager singleton, and an object-detection UI with bounding-box pooling.