Although no specific estimates exist on the need for AAC solutions, many people worldwide experience communication impairments due to developmental disorders, injuries, and age-related issues. The World Health Organization’s global report on assistive technology5 provides some insights into the unmet need for AT for communication, with communication aids such as boards, books and cards achieving the lowest median access percentage of 1.75 per cent. This indicates a significant gap between the need for these communication aids and their actual usage. In the United States, it is estimated that five million people (or 1.5 per cent of the population) have conditions that prevent them from relying solely on speech for communication. In Germany, 46 per cent of adults with ALS indicated a need for AAC, but 39 per cent were unable to obtain a device.
5Even fewer data exist on low- and middle-income countries (LMICs), but we understand that access to AAC is low and comes with unique challenges. 6 Purchasing high-tech AAC devices can be cost-prohibitive and reliant on internet connectivity, which is not always available. The diversity of languages also provides a barrier, as many LMICs use many domestic languages. Additionally, negative societal attitudes and stigmas surrounding disabilities can hinder the acceptance of AAC users and there may be a shortage of professionals such as speech-language pathologists, who are trained in AAC provision. Moreover, some LMICs may lack specific policies or guidelines addressing the needs of individuals with communication impairments and the provision of AAC services. Efforts are underway to address some of these challenges, including the development of culturally relevant and affordable AAC, training programmes for professionals, and advocacy for inclusive policies. As access to technology and connectivity improves globally, it is anticipated that the demand for AACs will also grow.