A method comprises receiving a first device ID request from user for registration of a first user device; generating a first unique identification number for the first user device; generating a first unique identification object based on a first DRM protocol, the first unique identification object including the first unique identification number; associating the user with the first user device, the first unique identification number and the first DRM protocol; receiving a second device ID request from user for registration of a second user device; generating a second unique identification number for the second user device; generating a second unique identification object based on a second DRM protocol, the second unique identification object including the second unique identification number, wherein the first DRM protocol and the second DRM protocol are incompatible; and associating the user with the second user device, the second unique identification number and the second DRM protocol.