An on-screen keyboard renders keys as clickable or tappable elements on the display, giving people who cannot use a physical keyboard, due to a motor disability, a missing limb, or a device with no keyboard at all, a way to type. It can be operated by mouse, touch, switch scanning, or an eye-tracking or head-tracking pointer.
Sites that trap keyboard focus incorrectly, or that require rapid or simultaneous key presses, create particular difficulty for on-screen keyboard users, who typically interact more slowly and sequentially than someone typing on a physical keyboard.