---
title: "presentationAnchor(for:)"
framework: authenticationservices
role: symbol
role_heading: Instance Method
path: "authenticationservices/asaccountauthenticationmodificationcontrollerpresentationcontextproviding/presentationanchor(for:)"
---

# presentationAnchor(for:)

Returns the most appropriate window for presenting the authentication modification interface.

## Declaration

```swift
func presentationAnchor(for controller: ASAccountAuthenticationModificationController) -> ASPresentationAnchor
```

## Parameters

- `controller`: The controller that performs the account authentication modification request.

## Return Value

Return Value A window to present the authentication modification interface.