updated 09:07 pm EDT, Wed July 30, 2014
Password vault app could work with third-party apps, merchants
AgileBits, makers of the security and password vault 1Password, are among the first to implement and preview an iOS 8 extension and third-party Touch ID support, allowing other app makers to utilize the program's stored passwords outside of the 1Password app itself. Apple announced the concept of iOS extensions at June's Worldwide Developer Conference, which enables one app to use tools or services found in a different app in a secure manner.
Previously, users of 1Password for iOS had to open up the 1Password app and use its own built-in browser in order to get the kind of login functionality Mac users have enjoyed through a browser plug-in. Conceivably, Apple and other browser makers could opt to allow the 1Password plug-in to work with Mobile Safari and other browsers, bringing the same functionality to iOS. Other third-party apps can use the 1Password extension to allow passwords and logins to be filled in using the "sheet" functionality of iOS.
The 1Password extension (and presumably the iOS version of the app) even allows Touch ID to be used to unlock the vault, one of the first examples seen of a third-party app taking advantage of the locally-stored Touch ID system. Apple has explained previously that neither app developers or merchants ever actually see any Touch ID data, such as fingerprint information -- they rely on an an authentication clearance from the Touch ID secure enclave rather than directly accessing any user data. Currently, Touch ID can only be used to unlock the device itself or buy items from the iTunes Stores.
AgileBits has posted the App Extension in its current form on a GitHub repository, along with sample code and documentation to help developers integrate the option. The company expects to have a new version of 1Password and the final iOS extension ready in time for iOS 8 when it is publicly released later this year.