Other changes specifically for developers could change how consumers buy and use apps. For one thing, people selling apps will be able to bundle several together and sell the package at a discount. And instead of just images, descriptions and reviews of apps, consumers will be able to view videos of the key features of an offering before deciding whether to buy or download it.
Potentially more important, apps will be able to share features, or "actions," through a capability Apple calls Extensibility. For example, a user looking at a website in a foreign language in the Safari browser will be able to activate the translation feature from the Bing search engine within the browser app, Federighi said. Another use will be for photo editing, where after taking a picture users will be offered the editing tools of every photo app on the phone. They'll be able to bring up the user interface and capabilities of those third-party apps without leaving the current app.
In a move that could help to secure apps, Apple is releasing an API (application programming interface) for the Touch ID feature that secures the iPhone 5S through fingerprint recognition. Developers will be able to use that function to control access to apps and data, unlocking items on a user's iOS Keychain when the user's fingerprint is verified. The fingerprint information itself stays on a secure part of the A7 processor and is never exposed to third-party apps, Apple said.
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