Question Extended Tracking

Hi all,

I am having trouble with Extended Tracking in Unity. I am a beginner, finding solutions on YouTube and Google, and as far as I can see the "Extended Tracking" is no longer available. Essentially, I have a 3D model which appears on the top surface of a cube, nothing fancy, but when users move too close to the model it disappears as the full tracker is no longer visible to the device. I would love for the model to remain, independently of the tracker but maintaining position, so that users can explore it from different angles, zoom in and out etc.

Perhaps there is a way of allowing Extended Tracking that I cannot find, or perhaps there is another fix. I am happy to do the research myself but I would be very grateful if someone could even point me in the right direction or tell me what to Google!

I am using Unity and Vuforia, targeting Android.

Any help would be greatly appreciated!

James