Smart and sustainable cities and communities constitute a "hot topic" on many current agendas, as the largest urbanization process in history is ongoing. Half of the world's population (and 75 % of Europe's) lives already in cities and another two billion are expected to "move in" by 2050. Smooth transports, healthcare, ICT services, energy efficient buildings, a smart use of the climate resources, eco-efficiency, sustainable water supplies and many others topics are addressed and covered (to some relevant extent) by the work. Central topics, such as usable and accessible electronic and mobile societal ICT services with the right security, accessibility and social security, in combination with culture, education and tourism are expected to have a strong impact on the development of new smart and sustainable solutions, optimized around economic, social and environmental aspects and impacting the societal planning (Figure 1 illustrates some aspects).
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