Smart Traffic Lights (connected vehicles): video cameras on the streets can automatically sense some cars, such as ambulances, and change the street lights to open lanes through the traffic or identify the presence of pedestrians and calculate the distance and speed of an approaching vehicle. Wireless Sensor and Actuator Networks: actuators can exert physical actions, unlike traditional wireless sensors, and control the measurament process, stability and oscillatory behaviours by sending alerts. Decentralized Smart Building Control: wireless control help measure temperature, humidity and gas levels in a building, and such information is exchanged among all sensors in order to form reliable measurements.