The system and method of the present invention provides the support of high density removable media, such as CD-ROM or MO, to be used as a distributed media for storing data where access thereto is securely restricted. Through this system and method, the secure periodic distribution of ...http://www.google.com.au/patents/US5703951?utm_source=gb-gplus-sharePatent US5703951 - System and method for access data control
