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# presentContent(_:from:)

Presents a sheet that teaches merchants how to use the specified
feature.

```
final func presentContent(_ content: ProximityReaderDiscovery.Content, from viewController: UIViewController) async throws
```

## Parameters

`content`

The topic to teach. You can get a list of available
topics from the [`contentList`](/documentation/ProximityReader/ProximityReaderDiscovery/contentList) property or fetch a topic for a
specific subject using the [`content(for:)`](/documentation/ProximityReader/ProximityReaderDiscovery/content(for:)) method.

`viewController`

The view controller to use when presenting the
sheet. Specify a currently visible view controller in your app.

## Discussion> Throws: This method throws a ``doc://com.apple.ProximityReader/documentation/ProximityReader/ProximityReaderDiscovery/ContentError`` if the sheet fails to appear.

Call this method when you want to display information about how to use
[`ProximityReader`](/documentation/ProximityReader) features on a merchant’s iPhone.  For example,
you might use this method to display instructions for how the merchant
uses Tap to Pay on iPhone. This method presents the requested information
in a sheet on top of your app’s UI, which remains on-screen until the
person dismiss it or an error occurs.

---

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