7.3.1-6 Reducing the Likelihood of Unintended Actuation

For actions that can have significant negative consequences, the user interface should be designed to reduce the likelihood of unintended actuation by requiring deliberate action for their execution.

Additional Information:
Deliberate actions should be required for inputs having serious potential consequences. Actions that require physical effort in the form of multiple steps or higher actuation forces may be less likely to occur accidentally as the result of a random motion of the user. In addition, actions that require greater attention, such as multiple steps and checks, may reduce the likelihood that the user will revert to the type of 'automatic' activity that could cause a slip. However, control actions that require multiple steps also should be designed to reduce the likelihood of other errors (i.e., the failure to complete a set of steps in the correct order).