Towards E-textiles in augmentative and alternative communication - user scenarios developed by speech and language therapists.

E-textiles have been the focus of interest in health technology, but little research has been done so far on how they could support persons with complex communication needs. A global estimate is that 97 million people may benefit from Augmentative and Alternative Communication (AAC). Unfortunately, despite the growing body of research, many persons with complex communication needs are left without functional means to communicate. This study aimed to address the lack of research in textile-based AAC and to build a picture of the issues that affect novel textile-based technology development. We arranged a focus group study for altogether 12 speech and language therapists to elicit user scenarios to understand needs, activities, and contexts when implementing a novel, textile-based technology in a user-centred approach. As a result, we present six user scenarios that were created for children to enhance their social interaction in everyday life when using textile-based technology that recognizes touch or detects motion. The persistent availability and the individual design to meet a person's capability along with ease of use and personalization were perceived important requirements. Through these scenarios, we identified technological constraints regarding the development of e-textile technology and its use in the AAC field, such as issues regarding sensors and providing power supply. Resolving the design constraints will lead to a feasible and portable e-textile AAC system.Implications for rehabilitationE-textiles are a novel approach to Augmentative and Alternative Communication (AAC) for children with motor dysfunctions and intellectual disabilities.-A portable AAC system implementing e-textiles for children with complex communication needs will enable several activities in daily-life situations. Therefore, further research is needed to resolve the design constraints to reduce the bulkiness of technology embedded in textiles, e.g., looking into the possibilities of passive and battery-free solutions.The developed user scenarios offer a starting point for developing initial prototypes for touch-based and motion-detection systems to enhance social interaction and motivation for persons with complex communication needs.