To oversimplify, Chirp uses sound to transmit words, pictures and URLs from one phone to another.
It's called Chirp, because its data transmission sounds like a robotic bird.
First, I'll tell you how Chirp works. Then I'll tell you why I think this bird has wings and could change how we all share data.
Chirp was created by a company called Animal Systems, which was a spinoff company by eggheads in the Computer Science Department at the University College London.