The study looked at how the distance between keys on a touch-sensitive device affects how well people can use it. They tested 30 people and found that as long as the keys are a good size, the distance between them doesn't really matter for accuracy and speed. For keys with rounded corners, it's best to have them 6-12mm apart sideways and 6-14mm apart lengthwise. For round keys, 6-12mm apart sideways and 6-16mm apart lengthwise is recommended. This information can help companies design better electronic products for users.