The most radical interface change on the iPhone X is the disappearance of the familiar Home button, which frees up a lot of space for a larger display. But the loss of the Home button means that Apple had to replace its functions with a variety of new gestures. Raluca Budiu of the Nielsen Norman Group explores the interface challenges that gestures face, including discoverability, memorability, and swipe ambiguity. Although Budiu identifies some areas where Apple’s approach with the iPhone X stumbles, she praises the Home line as a reminder of the iPhone X’s new gestural needs. If you have or are getting an iPhone X, it’s worth reading this piece to understand how it changes the iPhone user experience.