I think there are a lot more events that could be useful. Imagine you are travelling with lots of bags, maybe you are on a photo shoot or you are a roadie trav

I think there are a lot more events that could be useful. Imagine you are travelling with lots of bags, maybe you are on a photo shoot or you are a roadie travelling with a band. - bag goes out of range - bag back in range - bag motionless - bag moving at more than 20 km/hour That sort of thing. You could build some cool apps for moving with stuff efficiently. Assign items to people on the fly, maybe a Siri type interface.