Patent ID: 7818568

Claim:
A computer-readable storage medium for a game console comprising computer-executable instructions that, when executed, direct the game console to: create multiple validated user identities (U 1 , H 1 ), (U 2 , H 2 ), . . . , (U U , H U ) composed of the multiple user identities U 1 , U 2 , . . . , U U and associated values H 1 , H 2 , . . . , H U derived from the user's key; form a request containing a game console identity X, a game title identity G, the multiple user identities, and an identity A of an online service, as follows: Request=[X,G,A,(U 1 ,H 1 ), . . . , (U U ,H U )]; submit the request to a ticket issuing entity over a network; and prove with the ticket the game console identity and the multiple user identities playing at the game console, wherein the ticket issuing entity simultaneously authenticates each of the identities contained in the request.