Continuity: information that’s offered for one task is repeated, at timely intervals, until the task is completed or destination reached. Discoverability: the right information should be the easiest to notice at the right time, and different items should never compete for attention. Consistency: the same icons, colors and terms are always used. A “restaurant” should not become a “snack bar.” Terms, colors and other items should only need to be learned once. Clarity: the meaning of every message must be clear to as many people as possible, even if they speak a different language.
