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# ASWebAuthenticationPresentationContextProviding

An interface the session uses to ask a delegate for a presentation context.

```
@MainActor protocol ASWebAuthenticationPresentationContextProviding : NSObjectProtocol
```

## Topics

### Specifying the Anchor

[`presentationAnchor(for:)`](/documentation/AuthenticationServices/ASWebAuthenticationPresentationContextProviding/presentationAnchor(for:))

Tells the delegate from which window it should present content to the user.

[`ASPresentationAnchor`](/documentation/AuthenticationServices/ASPresentationAnchor)

A platform-specific type that indicates the kind of user interface element to use as a presentation anchor.


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