: visualization-based design and co-design systems. The first type provides a full immersive AR- based environment allowing to visualize, inspect and modify the 3D product models collaboratively. By analysing current research projects, the first type aims to support a more participatory design process by involving designers as well as product users/customers; the latter focuses on providing a more collaborative design pro- cess especially where the design process is carried out by different and remote contributors. Some examples, recently proposed by