Biometric technology roadmapping for personalized augmentative and alternative communication

The purpose of this paper is to provide a biometric based technology roadmap to advance personalized Augmentative and Alternative Communication (AAC) systems for individuals with disabilities. The proposed technology roadmap introduces two core components: an AAC biometric register and interoperable technological modules. The biometric register provides a structured framework for capturing and transforming physiological and behavioral traits to enable adaptive and context-aware communication. The interoperable module design supports reconfigurable AAC architectures, ensuring compatibility across diverse interfaces and devices. Together, these mechanisms establish a foundation for automated and scalable personalization in AAC technologies. The study demonstrates that the proposed methodology for technology roadmapping effectively connects established research with emerging computational practices. This is confirmed by the results of the case study such as sign language recognition. • Personalized Augmentative and Alternative Communication (AAC) is a branch of assistive technologies for people with communication disabilities. Technology roadmapping that adheres to the best biometric practices is a step toward future AAC technologies. • A biometric register is a framework for AAC. It links biometric traits, such as gestures, to intermediate traits, such as synthesized speech, for customizable communication channels. AAC provides accessibility through open protocols and modular design. The methodology for AAC technology roadmapping includes the developed expert elicitation protocol.