Accessibility in HCI aims to create digital products and environments that are accessible to individuals with disabilities, including those with visual, auditory, cognitive, and mobility impairments.

Screen readers are software applications that read aloud the text and other elements displayed on a computer screen, enabling individuals with visual impairments to access digital content.

Color contrast is important in accessible design to ensure that text and graphics are clearly visible and distinguishable from the background, especially for individuals with low vision or color blindness.

To make text accessible, it is recommended to use large font sizes, avoid the use of italics and bold text, and use a sans-serif font, as these practices improve readability and accessibility for individuals with dyslexia and other reading difficulties.

Alt text, also known as alternative text, is used to provide a brief description of an image for individuals who cannot see it, such as those with visual impairments or who are using screen readers.

Closed captions are text transcripts of spoken audio that are displayed on a screen, enabling individuals with hearing impairments to access audio content.

Keyboard accessibility is important in accessible design to ensure that individuals who cannot use a mouse or other pointing device can still navigate and interact with digital content using only a keyboard.

To make forms accessible, it is recommended to label form fields clearly and concisely, provide clear instructions for filling out the form, and use accessible color contrast for form elements.

ARIA (Accessible Rich Internet Applications) is a set of attributes that can be added to HTML elements to provide additional information about the structure and semantics of web content, making it more accessible to assistive technologies.

Augmentative and alternative communication (AAC) devices are assistive technologies that allow individuals with speech or language impairments to communicate using symbols, pictures, or text.

Skip links are used in accessible design to allow users to quickly navigate to the main content of a web page, bypassing repetitive navigation elements such as headers and menus.

To make tables accessible, it is recommended to provide column and row headers, use accessible color contrast for table elements, and summarize the content of tables in text format.

The Web Content Accessibility Guidelines (WCAG) are a set of guidelines developed by the World Wide Web Consortium (W3C) to ensure that web content is accessible to individuals with disabilities, including those with visual, auditory, cognitive, and mobility impairments.

Assistive pointing devices are assistive technologies that allow individuals with limited hand or arm movement to interact with computer screens and other devices.

Providing transcripts for audio and video content is important in accessible design to make it accessible to individuals who are deaf or hard of hearing, allowing them to access the information presented in the audio or video content.