Not everybody is able to use a mouse. Many people rely on keyboard navigation to access online content. These criteria ensure that your content is accessible for people who use the keyboard, but this often also translates into voice-recognition software users.
2.1.2 No keyboard trap
Keyboard traps make your webpage unusable for people who navigate by keyboard. Find out what they are and how to test for them.
2.1.4 Character key shortcuts
2.2.1 Timing adjustable
2.2.2 Pause, stop, hide
2.3.1 Three flashes or below threshold
2.4.1 Bypass blocks
If you use the tab key to navigate a webpage, it can take many keystrokes to get past all the menus and navigation items and into the main part of the page. A bypass block allows the user to skip past repeated items on a page and dive straight into the main content. Find out how to create a bypass block.
2.4.2 Page titled
Page titles are important in any context. Can you imagine a book with no title? Find out how to add a page title to your webpage.
2.4.3 Focus order
Navigating by keyboard really relies on the focus order being logical. Find out how to test and what to be careful about.
2.4.4. Link purpose (in context)
Hyperlinks are used in many different contexts. Learn how to make your hyperlinks accessible for people using assistive software.