'Excluding people who are already at a disadvantage by providing small, hard–to–use, inflexible interfaces to devices and apps that create more problems than they solve'. (Jellinek and Abraham 2012:06)
This applies to older people too, indeed anyone on a spectrum that we might draw between full functionality and diminishing senses. Personally, with four immediate relatives in their 80s it is remarkable to find how quickly they respond to the text size options of a Kindle, even having text read out loud, the back-lit screen of the iPad and in particular galleries of thousands of photographs which are their memories too (in the later case invaluable to someone who has suffered a couple of severe strokes).
Reasons to think about accessibility:
My observation here is that Many programmes are now deliberately ’app like' to meet expectations and because they are used in smartphones and tablets not just desk and lap tops. Where there is such a demand for app-like activities or for them to migrate seamlessly to smartphones and tablets (touch screen versions) we need stats on how many people would be so engaged - though smartphone growth is significant, as a learning platform tablets are still a minority tool.
The users who can miss out are the blind or partially sighted or deaf. Blind people need audio to describe what others can see and guide them through functions while deaf people and those with hearing impairments need captions where there is a lot of audio.
It is worth pointing out that there is 'no such thing as full accessibility for everyone'. Jellinek and Abrahams (2012:07)
But on the other hand, 'we mustn't exclude disabled people from activities that the rest of us take for granted'. Jellinek and Abrahams (2012:07)
There is less homogeneity in a learner population than we may like to think
Jellinek, D and Abrahams, P (2012) Moving together: mobile apps for inclusion and accessibility. (Accessed 25/082012) http://www.onevoiceict.org/news/moving-together-mobile-apps-inclusion-and-assistance