"The technology allows you to retrieve, within seconds, not only a track's title but also the artist and album. All that's required is to hold a mobile phone to a radio's speaker for three seconds-long enough to record a digital fingerprint when a song is playing.
The cell phone sends the fingerprint to a database that matches it with the identifying codes of almost every song ever recorded and released.
News source: CD Freaks - New Technology Names That Song
