Accessibility
Accessibility could be described as designing softare for use, without modification, by as many people as possible. The main focus is on accomodating non-standard interface usage. This could be a screenreader to help someone who is visually impaired or keyboard only usage for someone unable to use a mouse.
The accomodations are such that they generally benefit all users. For example, ensuring keyboard operability will allow experienced users, who tend to adopt quick key usage, to quickly and easily navigate your site.
Broadly speaking accessibility is concerned with:
- Perceptibility
- Operability
- Simplicity
- Forgiveness