I have been playing with
Vuforia and finally founf a way to make it so that it can track objects at a distance.
I'm starting with this (cleverly named) AR tag that I put on the floor where I want the furniture to go.
I start close so that it can recognize the AR tag, once it does then I can move out and choose what furniture I would like to put in that place.
I realize that IKEA is already doing this, but it's still fun to experiment with. My scale is a little off, but so far it's going pretty well.