Simply in code I use it like this:

```
let context = LAContext()
if context.canEvaluatePolicy(.deviceOwnerAuthentication, error: nil)
    context.evaluatePolicy(.deviceOwnerAuthentication, localizedReason: "jjj") { success, error in
        print(error)
        print(success)
    }
}

```

Then user can see:

[![enter image description here](https://i.stack.imgur.com/twjiA.png)](https://i.stack.imgur.com/twjiA.png)

Everything is fine until user tap `Cancel`. Then I display label:

`"Please use biometrics to authenticate"`. NOW I need to get a callback after user was authenticated at any time after first try was cancelled. How can I detect this?