Checkpoint 1.4 - Flash
Elements that do not convey any information should be made inaccessible
WCAG 1.0 Priority 2
WCAG Guideline 6. Ensure that pages featuring new technologies transform gracefully.
Flash elements that are purely decorative should not have any text equivalent, however if those objects contain text, for example, animations using words, screen readers will attempt to read them as textual information by default. Those elements must be made hidden from screen readers by deselecting Make Object Accessible option in the Flash Accessibility Panel.
Requirement
Hide all elements that do not convey any information by deselecting Make Object Accessible option or by using Action Script .silent property.
Example
Hiding elements with the Flash Accessibility Panel
Checking Tool
Use Flash Player 6 or newer to browse Flash content and a screen reader to test its accessibility
Information Source
The original source of this information is located on the W3C web site (www.w3.org/TR/WCAG10-TECHS/#tech-fallback-page)