| http://www.w3.org/ns/prov#value | - Preferably, the identifier included in the token is a pseudonym created by the IA and associated to the IMSI. The identifier can be also associated to the service provider as in the example illustrated in FIG. 2, such as in case more pseudonyms are created for the same subscriber, i.e., the same IMSI, to access different services within a session, as in the case of single-sign on (SSO) access mech
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