Keyboard Access

WAI Guideline 8 instructs Web designers to "ensure direct accessibility of embedded user interfaces." This Guideline refers to various Web site features that present users with some sort of onscreen controls besides the typical buttons and menus found in a browser. It is important that these controls be operable through different methods, to accommodate as many people as possible. Computer users with disabilities frequently utilize input devices other than a mouse, since using a mouse requires both sight and manual dexterity. A person who is blind, for instance, might rely upon the keyboard, while someone with a mobility impairment might use a head-mounted pointing device. While Web browsers themselves can be controlled through these methods, additional interfaces may not have the same functionality.

A common example found on museum Web sites is an image enlargement system that allows visitors to view works of art in detail. Depending upon the technology, users may be required to click the mouse on the image itself to zoom in. If so, this feature may be difficult to use for people with certain disabilities.

In the process of selecting an image enlargement system for Access Art, keyboard operability was a primary concern. Many popular technologies failed in this respect, but a suitable product was found in the EyeSpy™ Image Server from AXS Technologies. It allows visitors to use a mouse to click on the image, but it also provides a keyboard-accessible interface. By using a combination of the Tab and Enter keys, it is possible to experience the powerful zoom and pan features of EyeSpy™ without having to use the mouse.

Frans Geubels (1535 - 1590) Flemish KING ABIMELECH RESTORES SARAH TO HER HUSBAND, ABRAHAM, ca. 1560 - 1570 Tapestry: dyed wool and silk Height 166 inches Width 185 inches Gift of Mr. Robert Badenhop, 1952.10