IoT in smart cities: A contemporary survey

Smart cities are an important domain that is reaching great heights nowadays. IoT plays an important role in the implementation of smart cities. The people of the country which contains smart cities will be well developed socially, economically and the quality of their knowledge and living will also be developed a lot. The human efforts and time that are spent on doing the works manually will be reduced by bringing up smart cities. The people can be protected from any disaster, natural calamities, and any difficult situations by smart city ecosystem. The construction of smart cities will avoid time wastage in our day-to-day lives by all means. This paper mainly describes on what a smart city is, how it is created, uses, challenges, real-time applications, future scope for smart cities, etc. The IoT technologies used in implementing smart cities, the devices used to implement them are also discussed.