Patent ID: 8107952

Claim:
A mobile device, comprising: a data store in which subscriber-specific information is stored, wherein the subscriber-specific information identifies a user of the mobile device to a home network; a processor; and code comprising instructions executed by the processor for performing a method, the method comprising: obtaining an enriched identifier that consists essentially of a first part concatenated to a second part, the first part obfuscating the subscriber-specific information except to an entity associated with the home network, the entity being a member of a set of entities associated with the home network, the set of entities being the only entities that can recover the subscriber-specific information from the obfuscation, the the second part being a data string from which an identity of the entity can be ascertained by a receiver of the enriched identifier; storing the enriched identifier; and in association with a service request, providing the enriched identifier in lieu of the subscriber-specific information in the data store.