Hello,

I would like to interact with objects using the camera only -- no image recognition.  Like this game where you can pop bubbles falling from the top of the screen with your hands/body: https://itunes.apple.com/us/app/pop-flux/id545388864?mt=8.  I understand that Virtual Buttons require an Image Target.  In my first attempt, I modified the soccer ball demo by attaching the image target and virtual button soccer ball to the camera and set the camera's world center mode to None so that the Image target is always in front of the camera.  I modified DefaultTrackableEventHandler so that OnTrackingFound() and OnTrackingLost() are never called and the soccer ball and its components are always active.  When I run the app, I see the soccer ball in front of the camera, but the virtual button doesn't work unless I am looking at the target.  Has anyone had any luck implementing this kind of interaction?  Am I on the right track?  Are there any other ways to achieve this in Unity for iOs if vuforia is not well-suited it?

Thanks for any advice!