To help developers achieve more precise image tracking and seamless integration of virtual and real elements in augmented reality (AR) and spatial computing scenarios, Apple has recently comprehensively updated the technical guidelines for 'Reference Images' in its official developer support portal. Leveraging the ARKit framework, the guidelines significantly enhance the positioning accuracy and interaction naturalness of virtual objects in real-world scenes by optimizing environmental understanding and object capture technologies. Key updates include: a dynamic environment mapping algorithm that controls positioning errors within 2 centimeters and supports the automatic generation of 3D room models including door and window locations; the Metal 3 graphics framework, combined with dynamic resolution rendering, reduces GPU power consumption by 30% while maintaining a 90fps frame rate; and the newly added RealityKit 2 physics simulation engine enables rigid body dynamics and fluid simulations, enhancing the realism of virtual-real integration. Additionally, the guidelines provide multimodal interaction design paradigms that integrate eye tracking, gesture recognition, and voice control, improving task completion efficiency by 47%. Developers can leverage iPhone computing power for collaborative rendering via the ARRemoteRendering framework, overcoming computational limitations on glasses-based devices.