Color contrast is the difference in brightness, saturation, and pigment of different elements of an image that make it more (or less) difficult to see. 

A Cochlear implant is a small device that stimulates the cochlear nerve to improve hearing capabilities, most often used by those with severe hearing loss or partial deafness.

Chin switches are a type of chin-operated input device. They are primarily used by those with physical challenges making it difficult for them to use a keyboard or voice control.

Captions are a text version of speech that provide information to people who are Deaf or hard-of-hearing, or by people who process written content better than audio. Captions are also useful for people who can’t turn audio on or are in a loud environment.