{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,31]],"date-time":"2026-03-31T12:10:25Z","timestamp":1774959025912,"version":"3.50.1"},"reference-count":35,"publisher":"MDPI AG","issue":"11","license":[{"start":{"date-parts":[[2019,10,28]],"date-time":"2019-10-28T00:00:00Z","timestamp":1572220800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Operational Program Competitiveness, Entrepreneurship and Innovation","award":["1EDK-03487"],"award-info":[{"award-number":["1EDK-03487"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Information"],"abstract":"<jats:p>We present the technologies and the theoretical background of an intelligent interconnected infrastructure for public security and safety. The innovation of the framework lies in the intelligent combination of devices and human information towards human and situational awareness, so as to provide a protection and security environment for citizens. The framework is currently being used to support visitors in public spaces and events, by creating the appropriate infrastructure to address a set of urgent situations, such as health-related problems and missing children in overcrowded environments, supporting smart links between humans and entities on the basis of goals, and adapting device operation to comply with human objectives, profiles, and privacy. State-of-the-art technologies in the domain of IoT data collection and analytics are combined with localization techniques, ontologies, reasoning mechanisms, and data aggregation in order to acquire a better understanding of the ongoing situation and inform the necessary people and devices to act accordingly. Finally, we present the first results of people localization and the platforms\u2019 ontology and representation framework.<\/jats:p>","DOI":"10.3390\/info10110333","type":"journal-article","created":{"date-parts":[[2019,10,28]],"date-time":"2019-10-28T04:44:31Z","timestamp":1572237871000},"page":"333","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":11,"title":["Internet of Things Infrastructure for Security and Safety in Public Places"],"prefix":"10.3390","volume":"10","author":[{"given":"Angelos","family":"Chatzimichail","sequence":"first","affiliation":[{"name":"Information Technologies Institute, Centre for Research and Technology Hellas, 57001 Thermi Thessaloniki, Greece"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Christos","family":"Chatzigeorgiou","sequence":"additional","affiliation":[{"name":"Department of Electrical and Electronics Engineering, University of West Attica, 12243 Egaleo, Greece"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Athina","family":"Tsanousa","sequence":"additional","affiliation":[{"name":"Information Technologies Institute, Centre for Research and Technology Hellas, 57001 Thermi Thessaloniki, Greece"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Dimos","family":"Ntioudis","sequence":"additional","affiliation":[{"name":"Information Technologies Institute, Centre for Research and Technology Hellas, 57001 Thermi Thessaloniki, Greece"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Georgios","family":"Meditskos","sequence":"additional","affiliation":[{"name":"Information Technologies Institute, Centre for Research and Technology Hellas, 57001 Thermi Thessaloniki, Greece"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Fotis","family":"Andritsopoulos","sequence":"additional","affiliation":[{"name":"Technical Department iTrack Services Ltd., 18233 Piraeus, Greece"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Christina","family":"Karaberi","sequence":"additional","affiliation":[{"name":"Department of Research and Communication e-Trikala S.A., 42100 Trikala, Greece"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Panagiotis","family":"Kasnesis","sequence":"additional","affiliation":[{"name":"Department of Electrical and Electronics Engineering, University of West Attica, 12243 Egaleo, Greece"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Dimitrios G.","family":"Kogias","sequence":"additional","affiliation":[{"name":"Technical Department iTrack Services Ltd., 18233 Piraeus, Greece"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Georgios","family":"Gorgogetas","sequence":"additional","affiliation":[{"name":"Department of Research and Communication e-Trikala S.A., 42100 Trikala, Greece"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Stefanos","family":"Vrochidis","sequence":"additional","affiliation":[{"name":"Information Technologies Institute, Centre for Research and Technology Hellas, 57001 Thermi Thessaloniki, Greece"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Charalampos","family":"Patrikakis","sequence":"additional","affiliation":[{"name":"Department of Electrical and Electronics Engineering, University of West Attica, 12243 Egaleo, Greece"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6447-9020","authenticated-orcid":false,"given":"Ioannis","family":"Kompatsiaris","sequence":"additional","affiliation":[{"name":"Information Technologies Institute, Centre for Research and Technology Hellas, 57001 Thermi Thessaloniki, Greece"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2019,10,28]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"81","DOI":"10.1080\/02763869.2018.1404391","article-title":"Alexa, Siri, Cortana, and more: An introduction to voice assistants","volume":"37","author":"Hoy","year":"2018","journal-title":"Med. 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