Abstract.A pervasive environment needs to take account of a user's context and preferences in determining which services to provide to the user. Moreover, one of the important features of a pervasive service environment is its dynamic nature, with the ability to adapt services as the context of a user changes, e.g. as he/she moves around. This paper describes how these requirement changes can be sufficiently accounted for by using a personalisation component to 'decide' what a user needs, and a composition component to continuously monitor services and the changes associated with them. The paper presents how services can be recomposed dynamically if the changes in context require it. This approach has been incorporated into a platform to support pervasive services. The service composition process used is described, and the way in which personalisation is incorporated into this process is shown. Finally the paper provides a brief account of two prototypes built as a proof of concept for these ideas.

Abstract:Mobility is now the central focus of the lives of European citizens in business, education, and leisure. This will be enriched by pervasiveness in the future. The Daidalos vision is to seamlessly integrate heterogeneous network technologies that allow network operators and service providers to offer new and profitable services, giving users access to a wide range of pervasive, personalised voice, data, and multimedia services. This paper discusses the security issues that need to be addressed to make Daidalos a real viable solution for future pervasive mobility. Issues include among others privacy & identity management, secure protocols, distributed key management, security in ad hoc networks.

Abstract-Pervasive computing is a new and emerging technology. The concept of pervasiveness and its deployment into reality are still not well aligned. This is because the vision of pervasiveness is a highly complex area that encompasses a large number of issues. The real vision of pervasiveness will never become a reality if everyone involved needs to repeatedly address all the issues involved in the concept. This paper focuses on the DAIDALOS Pervasive Service Platform (PSP) as an enabler of pervasive services. DAIDALOS is an EU Framework Programme 6 Integrated Project with 46 multinational partners from both the industry and academia. The paper details the strategy employed in DAIDALOS to facilitate Service Providers to offer pervasive services on top of the PSP. It argues that pervasiveness should be provided to Service Providers as part of the platform, instead of requiring pervasiveness to be totally embedded in the services themselves. This approach consequently opens up the service provision market to more players, driving the idea of a truly pervasive world. The paper gives an overview of the DAIDALOS platform as a pervasive service enabler, detailing how it facilitates pervasiveness by removing most of the work from the Service Providers themselves.