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# ICScannerDeviceDelegate

Methods for determining availability, selecting a functional unit, and performing scans on connected scanners.

```
protocol ICScannerDeviceDelegate : ICDeviceDelegate
```

## Topics

### Determining Scanner Availability

[`scannerDeviceDidBecomeAvailable(_:)`](/documentation/ImageCaptureCore/ICScannerDeviceDelegate/scannerDeviceDidBecomeAvailable(_:))

Tells the client when another client closes the current open session on the scanner.

### Selecting a Functional Unit

[`scannerDevice(_:didSelect:error:)`](/documentation/ImageCaptureCore/ICScannerDeviceDelegate/scannerDevice(_:didSelect:error:))

Tells the client when a functional unit is selected on the scanner.

### Performing a Scan

[`scannerDevice(_:didCompleteOverviewScanWithError:)`](/documentation/ImageCaptureCore/ICScannerDeviceDelegate/scannerDevice(_:didCompleteOverviewScanWithError:))

Tells the client when the scanner completes an overview scan.

[`scannerDevice(_:didCompleteScanWithError:)`](/documentation/ImageCaptureCore/ICScannerDeviceDelegate/scannerDevice(_:didCompleteScanWithError:))

Tells the client when the scanner completes a scan.

[`scannerDevice(_:didScanTo:)`](/documentation/ImageCaptureCore/ICScannerDeviceDelegate/scannerDevice(_:didScanTo:)-6tht3)

Tells the client when the scanner receives the requested scan progress notification and a band of data is sent for each notification received.

[`scannerDevice(_:didScanTo:)`](/documentation/ImageCaptureCore/ICScannerDeviceDelegate/scannerDevice(_:didScanTo:)-10whl)

Tells the client when the scanner receives the requested scan.

### Deprecated

[`scannerDevice:didScanToURL:data:`](/documentation/ImageCaptureCore/ICScannerDeviceDelegate/scannerDevice:didScanToURL:data:)

Tells the client when the scanner device receives the requested scan.


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