No, not business, but cats. Or really, a cat. Reese is a fast little ninja and being good cat parents includes not locking her into a room on accident.
I knew a few years ago there were articles about indoor positioning via wifi, and indoor diode flight plans and stuff, so I figured all this was old hat by now. Totally not as far as I can tell. Currently the only simple looking solution recently got funded on kickstartr and costs more than I have.
Drawing board it is.
Peter's stuff.