I'm curious how "trustworthy" this is -- i.e. how hard it would be to spoof. If I could trust that a certain configuration of ~12 estimote beacons changing sig

I'm curious how "trustworthy" this is -- i.e. how hard it would be to spoof. If I could trust that a certain configuration of ~12 estimote beacons changing signals in a certain way as I walked through my home meant I was at home, I'd be comfortable using 4-digit PINs instead of passwords for a lot of things.