In addition to using your device’s iSight camera to scan in credit card information, Safari in iOS 8 makes it easy for third-party apps to tap into the browser's AutoFill & Passwords feature for hassle-free logins.
Provided a user has previously saved their username and password for a specific website using Safari's AutoFill & Passwords feature, a native iOS app is now permitted to retrieve this information and re-use it to authorize a user quickly and securely, bypassing the login screen altogether...