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# IKScannerDeviceViewDelegate

The `IKScannerDeviceViewDelegate` protocol defines the delegate protocol that the [`IKScannerDeviceView`](/documentation/Quartz/IKScannerDeviceView) delegate must conform to.

```
protocol IKScannerDeviceViewDelegate
```

## Topics

### Scan Completed

[`-  scannerDeviceView:didScanToURL:fileData:error:`](/documentation/Quartz/IKScannerDeviceViewDelegate/scannerDeviceView(_:didScanTo:fileData:error:))

Invoked when the scan has completed and the data is available.

### Scanner Encountered Error

[`-  scannerDeviceView:didEncounterError:`](/documentation/Quartz/IKScannerDeviceViewDelegate/scannerDeviceView(_:didEncounterError:))

Invoked whenever the scanner encounters an error.


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