||Over the past two decades, the technological development has been impressive without any doubts. Today we can execute tasks not even imaginable at the beginning of the eighties. Technology is now entering in our everyday life modifying our behavior in respect to the external ambient and to other people like us. An important aspect of the last years is the interface used to interact with electronics. Usual behavioral interaction paradigms are changing and extending to a use of the technology as something more natural and no more detached and aseptic. Therefore, interfaces are extremely important to allow people to completely benefit of those improvements that modern technology has. This talk wants to be a close examination to the actual state of human computer interaction with practical and concrete examples. Several different solutions will be presented not only regarding robotics but also related to everyday life problems.