Another issue is of course safety both of places (public buildings, working environments, schools, facilities, infrastructures etc) and of people (crime, terrorism, insane behavior etc). As for the first, it requires monitoring systems spread over the territory able to analyse for instance the state of buildings and infrastructures (roads, bridges, etc), detecting any structural issues in order to prevent collapsing in case of earthquakes or violent atmospheric phenomenon. Networks of sensors which, installed in different areas, may supply information continuously and in real-time. Similar systems may be applied to regulate water outflow and to control water pressure or to monitor the state of health of public green areas. As for the latter, instead, systems which are able to exploit the Internet of Things could be useful, collecting and processing data from, for example, security cameras, which are now widely used, in order to put them at disposal of the police, reporting immediately any situation of danger (fires, fighting, theft and robberies). In both cases it is necessary to have systems which may collect and process large quantities of data in real-time and provide quick solutions to whoever has to make a decision (reporting, for example, any danger near schools, hospitals, churches etc).