Now that you have a barebones app in place, it’s time to add various iCloud features to it. The chapters in this part of the book focus on the user data that can be synchronized across the user’s devices (subject to settings on the various devices, of course) using iCloud. Some of that data is entered explicitly either with the keyboard, with Siri or dictation, or with options in Mail and other automated hooks. The data discussed in this chapter—AddressBook data—can be entered explicitly, but it also frequently is added as a result of your normal actions, such as addressing an email message. This chapter shows you how to access that data as well as how to update AddressBook data.