Today, we are surrounded by intelligent device that can move autonomously. In the future this presence will became more and more common. Some years ago, nobody had an intelligent device that could clean the house, but today is quite common see some robot cleaner. In the future we will have a coexistence between human and robotic device. This evolution has advantages and disadvantages. Our lives will became easier and the boring things will be done from a robot or a smart device. The presence of robots around us could create some issues. The main issue is the co-presence of human beings and robots in the same environment and the rule to manage the interaction between this two kind of universe.