'LABiometryType' is only available on iOS 11.0.1 or newer

Question

Xcode 9.3 (beta) showing an error for enum LABiometryType, which was working fine with Xcode 9.2 with check available(iOS 11.0, *).

Here is error message:

'LABiometryType' is only available on iOS 11.0.1 or newer

Here is my existing code:

if #available(iOS 11.0, *) {
    if (laContext.biometryType == LABiometryType.faceID) {
        //localizedReason = "Unlock using Face ID"
        print("FaceId support")
    } else if (laContext.biometryType == LABiometryType.touchID) {
        //localizedReason = "Unlock using Touch ID"
        print("TouchId support")
    } else {
        //localizedReason = "Unlock using Application Passcode"
        print("No Biometric support")
    }
} else {
    // Fallback on earlier versions
}

Problem is: If I replace #available(iOS 11.0, *) with #available(iOS 11.0.1, *) as suggested in error message, then how to handle Face-id biometry (LABiometryType.faceID) for iOS 11.0.

Answer 1

You don't need to handle Face ID on iOS 11.0 because the iPhone X was released with iOS 11.0.1. There is no iOS device on iOS 11.0 that has Face ID capabilities.

See https://en.wikipedia.org/wiki/IOS_version_history#iOS_11_0 and https://en.wikipedia.org/wiki/IPhone_X