Make objects appear at the point of touch

As part of a larger program i’m working on i want to be able to make objects appear at the point of touch on the interactive surface. The end goal is to create different markers that work with IR/Capacitive touch screens and then having different objects appear depending on what marker is placed on the surface.

I can bind an object to a position but i cant work out how to make it track the point that the user touches - any suggestions, help, positive vibes will be greatly received!