Ensure that moving, blinking, scrolling, or auto-updating objects or pages may be paused or stopped. Some people with cognitive or visual disabilities are unable to read moving text quickly enough or at all. Movement can also cause such a distraction that the rest of the page becomes unreadable for people with cognitive disabilities.
Screen readers are unable to read moving text.
People with physical disabilities might not be able to move quickly or accurately enough to interact with moving objects. All of the following checkpoints involve some content developer responsibility until user agents provide adequate feature control mechanisms. 7.1 - Until user agents allow users to control flickering, avoid causing the screen to flicker. When a page includes moving content, provide a mechanism within a script or applet to allow users to freeze motion or updates. Using style sheets with scripting to create movement allows users to turn off or override the effect more easily.