Special issue on security, usability and sustainability of smart cities

Society and humans have gained real benefits from multidisciplinary research on intelligent environments. By combining real-time information and historical data, intelligentenvironments make beneficial decisions for their users, whichcan be useful for smart cities and sustainable development.Specifically, a smart city can utilise intelligent environmentsto make more efficient use of traditional systems, networksand services, to deliver citizen-centred services. These intelligent systems pose new performance- and reliability-relatedchallenges in terms of usability, security, and dependency,among other challenges. This special issue addresses someof the issues surrounding the developments, modelling, tools,design methodologies, case studies and trend-setting ideas inthe areas of security, performance, usability and sustainability of intelligent environments for smart cities.