Nowadays, the need for more user-centric privacy-aware transactions raises specific challenges that Service Oriented Architectures (SOA) need to address, including the problems of managing users' personal identification information and ensuring privacy and anonymity in the e/m-environment. This paper presents a targeted, user-centric and federated Single-Sign-On Identity Management System (IAM) called SecIdAM, and a mobile implementation framework for building privacy-aware, interoperable and secure mobile applications with respect to the way that the trust relationship among the involved entities, users and SOAs is established. Moreover, it analyses a usertransparent m-process, simulating the registration, negotiation of policies and identification information preferences, and user's authorisation sessions, as integrated in the IST European programme SWEB for the public sector.Reference to this paper should be made as follows: Karantjias, A., Polemi, N., Stamati, T. and Martakos, D. (2010) 'A user-centric and federated Single-Sign-On IAM system for SOA e/m-frameworks',