As part of iOS 8’s new Extensibility features, developers can now create app extensions throughout the system for sharing information and performing actions without actually launching their apps.
What this means for users is that the familiar action or share button (the upward arrow in a box) will now contain way more options than ever before. Remember when Apple added Facebook and Twitter sharing, for example directly to Safari and Photos on iOS? Starting with iOS 8, Apple is allowing all app makers to create similar buttons for sharing and actions. An example of an action (like copy or add to Reading List) shared by Apple at WWDC was native language translation directly in Safari using Bing Translate. Extension support also includes photo filters allowing photo editing apps that provide filter extensions to work inside of the native Photos app.
A year after introducing Touch ID, the secure fingerprint scanner first introduced with the iPhone 5s, Apple is also now allowing apps to take advantage of Touch ID for the first time. Touch ID users can now authenticate log-ins and more in supported apps using the secure fingerprint scanner. Below we’ll tell you about the latest apps already taking advantage of extensions and Touch ID support for iOS 8.