Proximity is a simple iPhone app that works as an alarm clock except the alarm is not set for a time but rather a location. It is aimed at commuters and others that end up sleeping while they are moving in some sort of transport. It is a great mobilization of two things that are usually understood as fixed: You sleeping in bed and your alarm clock on the bedside table are in a fixed location. A standard proximity sensor that is fixed in location sensing when moving things get closer than a pre-selected distance threshold.

I really like the transposition of a specific location where one would usually have a specific time, attaching an alarm to a where rather then a when. It is a bit of genius.

Proximity by Geoff Pado