The time to acquire a target is a function of the distance to and size of the target. Takeaways Touch targets should be large enough for users to accurately select them. Touch targets should have ample spacing between them. Touch targets should be placed in areas of an interface that allow them to be easily acquired. Origins In 1954, psychologist Paul Fitts, examining the human motor system, showed that the time required to move to a target depends on the distance to it, yet relates inversely...
