
Audible Magic’s technology specialises in identifying songs by their digital “fingerprints”, or acoustic characteristics. By joining up with a company called Palisade which provides network-security technology, the joint product is designed to intercept all traffic on a network, make a copy of it, and then make a running examination of that copy for items such as Kazaa or Gnutella traffic. When it finds digital packets originating from file-swapping software packages, it will compare the contents against Audible Magic’s database of fingerprints. If it finds a match to a copyrighted song, it will stop the transmission of a song in progress, even if some of the file has already been transferred.
The software is aimed at networks like universities and ISPs, who can of course refuse to install it. But what happens when the music business starts sueing them, as well as end users?