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WCAG 2.1 - SC 2.5.2 Pointer Cancellation


Users must be able to cancel accidental triggering of functions on down-events.


People with motor disabilities can accidentally trigger touch or mouse events with unwanted results. Activation can occur when someone touches a screen (down-event) or when they remove their finger (up-event). In mouse interaction, activation can occur when pressing (down-event) or when releasing the mouse button (up-event). Authors can reduce the problem of users inadvertently triggering an action by making activation on the up-event. This gives users the opportunity to move their finger or other pointer (e.g. mouse) away from the wrong target once they hit it.

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