A key whose value is an operation prompt.
- iOS 8.0+
- macOS 10.10+
- UIKit for Mac 13.0+Beta
- tvOS 9.0+
- watchOS 2.0+
The corresponding value is of type
CFString and represents a string describing the operation for which the app is attempting to authenticate. When performing user authentication, the system includes the string in the user prompt. The app is responsible for text localization.