There is a long tradition for crafting wearable objects directly on the body, such as garments, casts, and orthotics. However, these high-skill, analog practices have yet to be augmented by digital fabrication techniques. In this paper, we explore the use of hybrid fabrication workflows for on-body printing. We outline design considerations for creating on-body fabrication systems, and identify several human, machine, and material challenges unique to this endeavor. Based on our explorations, we present ExoSkin, a hybrid fabrication system for designing and printing digital artifacts directly on the body. ExoSkin utilizes a custom built fabrication machine designed specifically for on-body printing. We demonstrate the potential of on-body fabrication with a set of sample workflows, and share feedback from initial observation sessions.
The nature and quality of interaction can be dramatically affected by both the input sensing capabilities and output display characteristics of an interactive system. We are interested in exploring novel input and output configurations to help guide and inform future system designs that may be deployed on a wider scale as these technologies mature.