Your website must be fully accessible with only a keyboard.
What to do:
- Unplug your mouse and make sure you can do everything on your website that you would be able to do with the mouse plugged in
- Make sure you have no specific timings for individual keystrokes (e.g. a user is required to hold down a key or make multiple keystrokes within a few seconds before the keystroke is registered)
Plain English Explanation:
Everything on your website must be accessible without a mouse.
Elements to double check:
- Submission buttons
- Media players
- Navigation menus and submenus
- Sidebar content
- Embedded content
Certain programs that require a keyboard (e.g. painting program) may fall under an exception.