| 摘要 |
<p>A method of establishing a service session via a server with a secondary entity of a first user having a primary entity associated with a subscription is disclosed. The method comprises sending a unique identifier of the first user's subscription from the secondary entity to the server; receiving from the server a symbol sequence to the secondary entity; enabling sending of the symbol sequence from the primary entity to the server such that the server is able to match that the received symbol sequence and the sent symbol sequence are identical, wherein a match confirms that the secondary entity is authenticated if the primary entity is authenticated; and setting up the service session on the secondary entity. An entity, server, and corresponding method for the server, as well as computer programs for the entities and the server are also disclosed.</p> |
