“…We have extended the MAPI local component to support monitoringbased user accounting in a non-repudiable way, and we have experimented with it in the context of user/terminal mobility [40]. In addition, we are testing the first prototype of an enhanced version of the MAPI-based distributed tool that automatically organizes hierarchies of Managers depending on the topology of the administered systems and service components, thus improving the scalability of our solution when applied to large-scale deployment scenarios.…”