Their shared web site says "Apartm.net does crazy technology stuff," and this project definitely delivers.
Combining Foursquare's Alpha 2.0 API, a local push notification service and some electrical hardware, Erin Sparling and Nicholas Hall rigged their apartment door to unlock when one of the two checks in to their apartment on Foursquare.
On its own, it's a really creative way to geek out your entry. But their project is coming in handy this New Year's Eve: They're expanding the system beyond their own check-ins, letting party guests in without anyone but Foursquare tending to the door.
Check out this video (it's actually the video invite to the party) to see the system in action.
Would you consider something like this to give access to party guests? Or would you be too worried about crashers? Are you going to crash this party? Let us know in the comments!