Patent ID: RE45047

Claim:
A method of controlling access to a media storage device, the media storage device storing a plurality of media objects, the method comprising: receiving first data identifying the media storage device and second data identifying a list comprising at least one authorised recipient of the media storage device; storing the first data in association with the second data; issuing the media storage device to at least one recipient on the list; using a delivery session identifier to establish a delivery session for the issued media storage device with a user identification system corresponding to recipients associated with the second data; thereafter: updating the second data on the basis of data received from the user identification system and the delivery session identifier, thereby to modify the list of authorised recipients of the issued media storage device, wherein the delivery session identifier uniquely relates the issued media storage device and the media objects thereon to a given authorised recipient, and wherein the delivery session identifier is based on a combination of the first adapt and the second data.