2020
Journal article  Open Access

Designing assistive technology for getting more independence for blind people when performing everyday tasks: an auditory-based tool as a case study

Leporini B., Rosellini M., Forgione N.

Visually-impaired  Home automation  Smart home  General Computer Science 

Everyday activities and tasks should in theory be easily carried by everyone, including the blind. Information and Communication Technology (ICT) has been widely used for supporting solutions. However, the solutions can be problematic for the visually impaired since familiarity with digital devices is often required. Or, indeed the procedure can be perceived as fiddly or impractical particularly for repetitive tasks due to the number/type of steps required to complete the task. This paper introduces a simple audio-based tool aimed at supporting visually-impaired people in the seemingly simple activity of checking whether the light in a room is on or off. It is an example of potential low tech devices that can be designed without the need for specific skills or knowledge by the user, and that functions in a practical way. In this context, we discuss the main issues and considerations for totally blind users in identifying whether a light is switched on. The proposed prototype is based on a simple circuit and a form of auditory feedback which informs the user whether they are switching on or off the light. Two prototypes have been designed and built for two different kinds of installation. For the subsequent second prototype, three different versions are proposed to provide a blind person with further support in easily identifying the light status at home. The new design includes enhanced auditory feedback and modifications to the dimensions. The evaluation conducted by involving various groups of end-users revealed the usefulness of the proposed tool. In addition, a survey conducted with 100 visually-impaired people reported the limitations and difficulties encountered by the blind in using existing devices. Moreover, the study revealed the interest from 94% of the participants for a potential (new) basic tool integrable with the existing lighting system. This study gives a contribution in the ambient intelligence field by (1) showing how an auditory-based tool can be used to support totally blind people to check the lights in an autonomous and relatively simple way; (2) proposing an idea that can be exploited in other application cases that use light feedback; and (3) proposing seven potential recommendations for designing assistive technology tools and common everyday devices, based on information gathered from the online survey.

Source: Journal of ambient intelligence & humanized computing (Print) 11 (2020): 6107–6123. doi:10.1007/s12652-020-01944-w

Publisher: Springer, Heidelberg ; Berlin


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BibTeX entry
@article{oai:it.cnr:prodotti:421337,
	title = {Designing assistive technology for getting more independence for blind people when performing everyday tasks: an auditory-based tool as a case study},
	author = {Leporini B. and Rosellini M. and Forgione N.},
	publisher = {Springer, Heidelberg ; Berlin},
	doi = {10.1007/s12652-020-01944-w},
	journal = {Journal of ambient intelligence \& humanized computing (Print)},
	volume = {11},
	pages = {6107–6123},
	year = {2020}
}