The industry has also been clamping down on universities, asking them to warn students who use computers on campus of their criminal liability if they download music, and to wipe out illegally stored files.

ECONOMIST: How to pay the piper

The university was the subject of a study in 2004 by computer chip maker Intel which showed how the use of notebook computers had increased from 1.2% of students in 1999 to 35% just four years later.

CNN: Wired up for learning