A good friend of mine, Andy Huibers, has just coded his first iPhone application. It’s called “Bump”, and is a way to transfer contact information effortlessly. You literally bump your iPhone with someone else’s iPhone (or iPod touch), and your contact information is swapped. The phones don’t talk to each other directly. An accelerometer in each phone responds to the bump and contacts a central server, which matches everything up. Pretty clever. Here’s a video:
If you’ve got an iPhone or iPod Touch, check it out. It’s free.