foursquare as the keys to your world

Forget about unlocking badges. What if FourSquare could unlock doors for you? In the real world?

Using the FourSquare API and their apartment building's electronic lock system, Erin Sparling and Nicholas Hall did exactly that. Check into their apartment on FourSquare, and it opens the door.

Right now they have it set so that only they can unlock it, but you're totally invited to their New Years Eve party this year, where they're opening the door to anyone who checks in. For real. Sounds like fun.

This opens up a world of possibilities...