Apple launched ARKit at the 2017 WWDC Conference, making Apple a popular platform for AR content developers. In 2018, WWDC Apple continued to push ARKit 2.0, hoping to attract more AR technology and content developers attention Apple's AR platform. Cult of Mac believes that ARKit 2.0, in addition to the introduction of the new AR open file format USDZ, strengthens the detection and tracking of 3D objects and images. The most important change is the addition of multiple people. Participate in the sharing experience. ARKit 2.0 allows multiple users to participate in games and collaboration content. Developers can also add audience models to allow other people to participate in real-time shared AR experiences. Each participant can be viewed by different iOS devices with their own perspective. To achieve a common AR experience. As a result, the AR application is not just for players to participate in the game experience. ARKit 2.0 allows users' friends and relatives to create AR content together and deepen the AR experience through collaboration or games. In addition, Apple accelerates AR. The sharing and use of file formats, together with the Pixar animation studio, launched USDZ (Universal Scene Description), an uncompressed file format Through Messesges, Safari, email, etc. Future content providers such as Adobe, Autodesk, Sketchfab, PTC and Quixel will also be compatible with USDZ. In addition, Cult of Mac believes that it is important to make the AR experience easy to transmit, but let AR be Creation is easier and can increase the speed of AR application. The creation spirit of What You See is What You Get is the key to Apple's launch of Measure. Measure can quickly estimate real-world objects. The size of the object, calculate the diagonal length and area of the object, and take pictures directly to share with others. It is worth noting that not all devices that upgrade iOS 12 support ARKit 2.0 and USDZ, Apple announced on the official website only after iPhone 6s The model, iPad Pro, and fifth/sixth generation iPad support.