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VR2Care project aims an innovative approach for physical activity, training and rehabilitation, in smart living environments by providing intelligent interfaces in a single or multi-user environment. The solution combines virtual reality technologies for supervised exercise with natural interaction techniques, enhancing socialization with gamification aspects in the practice of physical activity in a metaverse context. VR2Care goes beyond the common requirements as it is co-designed with active participation of older adults, caregivers, therapists, community and clinicians to provide a full immersive multi-user experience. This paper discuss the system design options and the architectural challenges to support the VR2Care digital ecosystem.

CCS Concepts: • Human-centered computing→Virtual reality; Collaborative and social computing systems and tools; Interaction techniques; User centered design.

Additional Key Words and Phrases: natural interaction, socialization, physical activity, metaverse, gamification, co-design