Nowadays is becoming quite common to see those small flying objects that we call "drones" over the skies of the mains cities of the world. These machines, that appeared some years ago in the millitary enviroment, are becoming so popular because of the possibilities they could offer to assit our daily needs. Some renowned companies like Amazon have invested a big ammount of money in these machines. The reason is pretty simple: a future scenario where the drones work as "delivery men". The drones are destined to be an important part of our future smart cities because of the challengue that is on the table: the good cohabitation of the smart cities technologies. But, what can the drones offer to the smart cities? Security, polution control, traffic control, 3D maps drawing and package delivery are only the tip of the iceberg of the cooperation between the drones and...