The goal of this research is to develop a multimodal interface through which human can communicate with robots in different ways (audio/speech recognition, tactile screen, and hand gestures) that demonstrates the usefulness of integrating many modes of interaction. The reason of using this multimodal interface is to make the communication between humans and robots similar to human-to-human communication. These multimodal systems appear to improve HRI by allowing humans to communicate in a more spontaneous way and provide a friendly interface that allows people to make use of the services offered by the robot (guided process of patients, remote assistance, and freight) in an easy and intuitive way.