A method and system for distributing digital information is disclosed. Preferably,
a user acquires a tangible object which contain a code authorizing access to the
digital information. The user reads the tangible object through a reader, which
sends the code to a server on which the digital information is stored. The server
then authorizes access to the digital information to one or more access devices
listed in registries belonging to the user. The user may use the digital information
on the terms he agrees to, and, while in use by the user, access to the digital
information to other users or other playback devices is disabled. Once the user
no longer is using the digital information, the access device erases the digital
information, and signals the server that the digital information is no longer in
use, thereby re-enabling access to the digital information by the other playback
devices listed in the registry.