Technology is being developed that can block transmission of digital-video files. A new "fingerprinting" technology, developed by researchers at Royal Philips Electronics, can help movie studios to win the war on peer-to-peer networks.

Similar to technology already being used in university networks to track and prevent copying of music files, the new technology could be a powerful weapon in Hollywood's increasingly aggressive attempts to shut P2P movie trading on the net down.

"For identifying content over peer-to-peer networks, this is the ideal technology to use. We are now working with a group of engineers to improve it." - Ronald Maandonks, business development manager for content identification at Philips.