Patent ID: 8572752

Claim:
A method of digital rights management in a first device of digital data content the first device is connected to least one second device via a communication channel, said method comprising acts of: providing to said first device digital rights for accessing said digital data content and an available amount of access to said digital data content; said first device: receiving a request for a portion of the amount of access to the digital data content from second device; when the requested portion of the amount of access is within said available amount of access, deducting said requested portion of the amount of access from said available amount of access, transferring said requested amount of access to aid second device via the communication channel, duplicating said digital right for accessing said digital data content to said second device as a second digital right, verifying, by said second device, that said second digital right and an amount of access by the second device are not modified without authorization, deducting the amount of access used by the second device from said request amount of access to determine the part of said requested amount of access that is unused, receiving back from said second device at least part of said requested amount of access that is unused by said second device, based upon results of the verification by the second device, verifying, by the first device, that said right and said available amount of access are not modified without authorization, and merging the part of said requested amount of access that is unused by the second device based upon results of the verification by the first device.