ina wrote:

Is there a way to toggle at runtime between AR mode camera and a regular camera in Unity

To essentially toggle between two cameras I attached two camera scripts to one camera. One being the TrackerScript. Then I enabled and disabled the other script as necessary. It required a bit of fiddling but it works well now.

My goal was to let them use a different camera interface when a trackable wasn't present so it may not apply to what you are trying to do.

I haven't worked with multiple cameras much, but it looks like playing with the depth isn't enough to solve this problem. I might add a little script to each camera, that deactivates one camera depending on whether the app is running in the editor or not.

public class EditorOnly : MonoBehaviour
{
    void Start () {
        if (!Application.isEditor)
            gameObject.active = false;
    }
}

public class DeviceOnly : MonoBehaviour
{
    void Start () {
        if (Application.isEditor)
            gameObject.active = false;
    }
}

- Kim