Thanks for the quick reply, Muhammed Zakir. The game-related aspect sounds interesting. Let me know if you recall any other details.

It might be a tall order, but would anyone be able to articulate the bird's eye pseudocode for the sort of functionality involved in sending bitcoin based on location?

First post ever: I've had bitcoin on my radar since early 2012 but I really only have a layman's understanding of what is possible.
I'm interested in location-based potential of bitcoin and wanted to know if there is a wallet or some kind of app that could be designed to let users "detect" other nearby users and send money to their public keys. Is this already possible?