Abstract Motion-based technology (MBT) has been applied in the last decades with enormous success in a high number of applications. Its use continues growing and is specially interesting in the health area. Nowadays, its employment is being more and more specialised with respect to the profile of the end user (i.e., child, adolescent/teenager, adult or elderly). This paper first reviews the use of MBT centered in the end user from a global perspective. It also proposes a taxonomy that allows cataloguing the MBT employment directed to the end user. Then, from these results, the paper centers the review on the MBT application aiming to improve the health of elderly. The results highlighted in this paper can help to a better understanding of MBT, especially when it is applied thinking in elderly as the end users.

Visual interfaces are important in human motion to capture it, to visualize it, and to facilitate motion-based interactive systems. This workshop aims at providing a platform for researchers, designers and users to discuss the challenges related to the design of visual interfaces for motion-based interaction, in terms of visualization (e.g. graphical user interface, multimodal feedback, evaluation) and processing (e.g., data collection, treatment, interpretation, recognition) of human movement (e.g., motor skills, amplitude of movements, limitations). We will share experiences, lessons learned and elaborate tools for developing all the possible applications going forward.

This paper presents a project that developed a Serious Game with a Natural User Interface, via a Participatory Design approach with two adolescents with High-Functioning Autism (HFA). The project took place in a highly specialized school for young people with Special Educational Needs (SEN). The teenagers were empowered by assigning them specific roles across several sessions. They could express their voice as user, informant, designer and tester. As a result, teachers and young people developed a digital educational game based on their experience as video gamers to improve academic skills in Geography. This paper contributes by describing the sensitive and flexible approach to the design process which promoted stakeholders' participation.

We propose a new system that efficiently combines direct multitouch interaction with co-located 3D stereoscopic visualization. In our approach, users benefit from well-known 2D metaphors and widgets displayed on a monoscopic touchscreen, while visualizing occlusion-free 3D objects floating above the surface at an optically correct distance. Technically, a horizontal semi-transparent mirror is used to reflect 3D images produced by a stereoscopic screen, while the user's hand as well as a multitouch screen located below this mirror remain visible. By registering the 3D virtual space and the physical space, we produce a rich and unified workspace where users benefit simultaneously from the advantages of both direct and indirect interaction, and from 2D and 3D visualizations. A pilot usability study shows that this combination of technology provides a good user experience.

Networked virtual environments like Second Life enable distant people to meet for leisure as well as work. But users are represented through avatars controlled by keyboards and mouses, leading to a low sense of presence especially regarding body language. Multi-camera real-time 3D modeling offers a way to ensure a significantly higher sense of presence. But producing quality geometries, well textured, and to enable distant user tele-presence in non trivial virtual environments is still a challenge today.