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# captureTextFromCamera(_:)

Starts scanning text using the device’s camera.

```
func captureTextFromCamera(_ sender: Any?)
```

## Parameters

`sender`

The object that invokes this method.

## Discussion

To receive callbacks from the data scanner, the responder should conform to either the [`UIKeyInput`](/documentation/UIKit/UIKeyInput) or [`UITextInput`](/documentation/UIKit/UITextInput) protocol. If it conforms to [`UIKeyInput`](/documentation/UIKit/UIKeyInput), the scanner calls the <doc://com.apple.documentation/documentation/AppKit/NSTextInput/insertText:> protocol method. If it conforms to [`UITextInput`](/documentation/UIKit/UITextInput), the scanner calls the [`setMarkedText(_:selectedRange:)`](/documentation/UIKit/UITextInput/setMarkedText(_:selectedRange:)) and [`unmarkText()`](/documentation/UIKit/UITextInput/unmarkText()) protocol methods.

To determine whether the data scanner runs on the user’s device, pass [`captureTextFromCamera(_:)`](/documentation/UIKit/UIResponder/captureTextFromCamera(_:)) to the [`canPerformAction(_:withSender:)`](/documentation/UIKit/UIResponder/canPerformAction(_:withSender:)) method.

## See Also

  <doc://com.apple.documentation/documentation/VisionKit/scanning-data-with-the-camera>


---

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