The research objective is to identify the role of design in the wearable devices. This kind of project need an interdisciplinary approach typical of Biodesign discipline, a nucleus of competencies in the areas of design, ergonomics, medicine and engineering. The choice of this research subject was born by the necessity to understand if design is able to filling the gap in wearable system project, caused by the absence of an user-oriented approach. The research is divided into two parts. The first wants to develop tools able to give the designer instruments to define requirements, performances and project solutions, but especially the chance to address himself in a proposal way to the sector of bio-devices. The second part is developed wi...