Analysis and application of forms of human-computer interaction (HCI) in a technological tool for augmentative and alternative communication (CAA) based on pictograms, which helps older adults to communicate with their environment.

According to the American speech, language and hearing association (ASHA), augmentative and alternative communication (CAA) is defined as the development of technology or alternative methods to help people develop or recover the ability to communicate. "Thus, CAA is very useful in the daily life of older adults (PAM) that require communicating by different means, including technological ones; but that, due to problems related to their health. Vision, motor skills or difficulty with the interfaces of existing technological tools, constitutes a constant challenge. Of pictograms. They describe concepts easily and intuitively. They need to be studied, given the technological gap that exists with the PAM and the different forms of deterioration of skills of their age. CAA, based on pictograms. Others). Regarding the user and the use of technology. "

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