Making devices usable, useful, and fun, focusing on the efficiency and intuitive hardware[3] A fusion of product design, computer science, and communication design [3] A process of solving specific problems under a specific set of contextual circumstances[3] The creation of form for the behavior of products, services, environments, and systems[4] Making dialogue between technology and user invisible, i.e. reducing the limitations of communication through and with technology.[5] About connecting people through various products and services,[6]