306 ITU‐T's Technical Reports and Specifications Figure 64 – Overview of e‐health M2M use cases. 3.4 Public safety and emergency The power provided by the ICT infrastructure to public safety is beyond doubt. However a city highly dependent on all aspects of technology, has risks of sabotage that can disable much of their public services and good performance in general, so public safety must also ensure the continuity of the technological features using a good protection to the ICT infrastructure. Public Safety is one of the key issues of a city. ICT facilities should include: City safety system combined with environmental monitoring, road monitoring, perimeter security, product safety and access control, and other functions; Cloud‐based large‐scale data storage, retrieval, intelligent video analysis, biometric technology, integrated platform for data intelligent analysis, etc.; Increased bandwidth to support a wide range of applications of security. The smart city safety system builds a network of security, helping security officers avoid misjudgments, while providing a scientific and reliable method for security. Two important systems for public safety: Geo‐location Systems of Cell Phones and the System of National Alert using cell broadcast are shown in Figure 60. Both systems are interconnected and managed by the Centralized Emergency Center.