Interactive visualizations prompt the user to directly engage with the data, creating opportunities for a full understanding of trends and relationships. As families and other key stakeholders turn to the Web for quick information, making data dynamic is increasingly important.
Interactive Displays Accessibility Tips
Accessibility considerations for interactive displays focus on creating graphics and functionality that can be accessed multiple ways by a wide variety of users. Web Content Accessibility Guidelines (WCAG) 2.0 developed by the Web Accessibility Initiative include the following considerations when putting data into interactive displays:
- Avoid using color as the only way of conveying or distinguishing information, and give the user control to set foreground and background colors.
- Provide a way to resize text up to 200% without loss of content or functionality.
- Ensure all functionality is available from a keyboard.
- Use headings and labels to describe the content and its purpose.
- Provide a way to identify the meaning of all acronyms and other less common words and phrases.
- Provide text alternatives (alt text) for all non-text graphics so that it can be changed into other forms such as braille or large print, and used by assistive technology such as screen readers.
- Use labels, instructions and error messages so that users can avoid and fix mistakes.