1
Janet L Dolphin: System and method for access control for portable data storage media. Spyrus, Medlen & Carroll, October 10, 1995: US05457746 (390 worldwide citation)

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 several diffe ...


2
Janet L Dolphin: System and method for access control for portable data storage media. Spyrus, Gray Cary Ware & Freidenrich, October 14, 1997: US05677953 (272 worldwide citation)

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 several diffe ...