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In this paper, the authors present a platform for the direct consumption of web services by a Mobile Station. They give an architectural solution where Mobile Operators play the role of Trusted Third Parties supplying service credentials that allow a co-located 3GPP Network Application Function and Liberty-enabled Identity Provider entity to implement a controlled Shopping Mall service to Mobile Stations from multiple trust domains. They consider both the protocol and the structure and syntax of the various tokens required to minimize service latency over the bandwidth and performance constrained mobile system, whilst providing adequate security services to protect against the perceived threat model.
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