Examples

An online application form contains numerous input fields. If the field labels are not readable, how can she successfully complete the application form?
A chart describes the change in a population over time. If a user cannot see the chart, how can she understand the data?
An online training video narrates a process for completing a task. If the video is uncaptioned, how can a Deaf or Hard of Hearing user learn from the training how to complete the task?
An online article is presented as a scanned PDF. If a user cannot read the PDF, can he learn the content of the article?
A website's contact information is displayed in the footer. If the contrast is insufficient to distinguish between background and text, how can a low-vision or color-blind user contact the site owner?
A kiosk requires users to touch the screen to access an interactive exhibit. If the touch-screen controls are out of reach of the user, how can she interact with the exhibit?