A Unity ID allows you to buy and/or subscribe to Unity products and services, shop in the Asset Store and participate in the Unity community.
Separate names with a comma.
You can get an array (I think it's an array?) of image objects detected by the TrackedImageManager by using the OnTrackedImagesChanged function....
From what I understand, as long as the AR Session Origin object is the default scale, one unit in Unity is equivalent to one meter in real life....