Couldn't they claim that the user transmits the information they want encoded to them by quantum teleportation using the CD as the shared "secret" key? Thus encoding only information that belongs to the user rather than an identical but illegal copy.
Slashdot Mirror
Couldn't they claim that the user transmits the information they want encoded to them by quantum teleportation using the CD as the shared "secret" key? Thus encoding only information that belongs to the user rather than an identical but illegal copy.