As I understand it, this is not so much about DRM as it is about privacy. The new model tag allows the browser to sandbox the display of a 3d object without rep

As I understand it, this is not so much about DRM as it is about privacy. The new model tag allows the browser to sandbox the display of a 3d object without reporting information back to the web page/server. This way, the browser can use camera data to track the user eye position relative to the device for parallax or to show what is behind the device to accomplish the effect known as "augmented reality." In other words, Apple wants developers to be able to deploy augmented reality experiences on the web without giving them access to the user's camera, which is a privacy issue.