Designing UI for AR
Remember, that what distinguishes AR from MR is AR tends to be on a screen that overlays the real world, while MR appears more immersed and inside the world. So, interactive items for AR experiences will be displayed on the screen, not within the world.
Designing UI for AR is highly dependent on the device that is being used to augment reality. For the sake of clarity, I am going to focus my discussion on AR games developed for cell phones rather than trying to speak universally and include things such as installments and kiosks.
When designing UI for AR app on a mobile or touchscreen, you will want to follow the rules outlined in Chapter 2. Best practice is to place most non-augmented digital items (that is, the HUD UI) on the outer edges of the screen. Then, augmented digital items will appear in the middle of the screen. This will cause items that are augmenting the world to be the focus.