Wikitude

How to create 'hotspot' on Image target that triggered when focused

I have just checked out the sample on www.wikitude.com/try, in which there is a helicopter image target that when recognized, shows 3 hotspots, and when the camera focus on these spots, actions are being triggered.

I want to learn how to achieve this, but so far there's no luck digging around the documentation.

Is anyone have any idea about this?

 

Awesome! Never though of that, clicking on center of the screen.

I will check on it, thank's a lot.