Storage device and information processing system

A storage device comprising:

• a connection unit to which one of a first external device having a first external device ID and a second external device having a second external device ID is to be connected;
• a first non-volatile memory in which content items are each stored with associated unique content IDs;
• a first controller configured to access the content items stored in the first non-volatile memory;
• an antenna;
• a second non-volatile memory in which permission information and permission factors for updating the permission information are stored, wherein the permission information includes a first permission information that associates a first permission flag with the first external device ID and at least one of the content IDs, and a second permission flag with the second external device ID and at least one of the content IDs;
• and
• a second controller configured to update the permission factors and, in response to a request from a third external device to read the permission factors, transmit the permission factors to the third external device, and then update the permission information stored in the second non-volatile memory based on update information which is generated by the third external device using the permission factors and received from the third external device through the antenna, wherein
• the request to read the permission factors and the update information are contained in radio waves transmitted by the third external device and the radio waves cause the antenna to generate power by electromagnetic induction, the generated power supplying power necessary to operate the second non-volatile memory and the second controller, and
• in response to a read command from the first external device having the first external device ID, the first controller performs a read of a first content item, which is one of the content items, if the first permission flag associated with the first content item indicates that the first content item is allowed to be read, and in response to a read command from the second external device having the second external device ID, the first controller performs a read of a second content item, which is one of the content items, if the second permission flag associated with the second content item indicates that the second content item is allowed to be read.