Web Accessibility

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Motor disability

You may have one of the various types of physical disabilities that affect different parts of the body and involve weakness, limited muscular control (involuntary movements, lack of coordination or paralysis), limited feeling, joint problems or missing limbs, among others.

Consequently, you may encounter problems when carrying out some daily tasks, such as using a mouse, moving a cursor, using a tactile screen, pressing two keys at the same time, or keeping a key pressed down. In more severe cases, you may not be able to use a keyboard or enter data.

The main accessibility barriers you could encounter with web pages are:

  • Graphic links and elements requiring action that are inadequately labelled and are inaccessible to voice recognition.
  • Impossibility of interacting adequately with the page using the keyboard or other data entry devices.

To facilitate interaction with web pages, you can use a special keyboard or mouse (keyboards with large keys, conventional keyboard with an overlay, a large trackball mouse, button mouse, etc.).

  • If you need to press various keys at the same time but are unable to use both hands to do so, you can use the "StickyKeys" function to achieve this key combination by pressing a single key a certain number of times.
    • For example, these keys can be set to carry out certain functions ([Ctrl + Alt + Supr], [Alt + F4], etc.) in Windows using the StickyKeys or "special keys” functions. The Control + Alt + Supr key combination can be achieved by pressing the Shift key five times.
    • You can set this in the GNOME environment for GNU/Linux by activating StickyKeys in the keyboard accessibility preferences window.
    • The macOS operating system lets you activate the options for slow keys or easy press keys in the "Accessibility" window in the "Keyboard” section.
  • You can change the functions assigned to all the buttons on your pointer device, enabling you to assign the most important functions to the buttons that are most useful to you, as well as set the movement speed of the pointer device and adapt it to your handling capabilities.
    • Windows lets you do this through the Control Panel > Accessibility Centre, selecting the options that best suit your needs in "Easier mouse use".
    • MacOS lets you do this using the various options in the "Mouse and Trackpad" section in the Accessibility window.
  • You can set the keyboard to emulate some of the mouse actions:
    • Windows lets you do this from the Control Panel > Accessibility Centre and select the options that best suit your needs in "Easier keyboard use".
    • MacOS lets you do this using the various options in the "Keyboard" section in the Accessibility window.

The most severe cases of physical impairment may require the use of alternative systems of interaction with the device based on voice (voice recognition) or movement with other parts of the body (head or mouth), using alternative pointer systems. Hence the need to eliminate the accessibility barriers described above.