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Get Started

In this guide you will learn step-by-step how to add ID Capture to your application.

note

Using ID Capture at the same time as other modes (e.g. Barcode Capture or Text Capture) is not supported.

The general steps are:

  • Creating a new Data Capture Context instance
  • Accessing a Camera
  • Configuring the Capture Settings
  • Implementing a Listener to Receive Scan Results
  • Setting up the Capture View and Overlay
  • Starting the Capture Process

Prerequisites​

Before starting with adding a capture mode, make sure that you have a valid Scandit Data Capture SDK license key and that you added the necessary dependencies. If you have not done that yet, check out this guide.

note

You can retrieve your Scandit Data Capture SDK license key, by signing in to your Scandit account.

Please note that your license may support only a subset of ID Capture features. If you would like to use additional features please contact us at Scandit Support.

Create the Data Capture Context​

The first step to add capture capabilities to your application is to create a new data capture context. The context expects a valid Scandit Data Capture SDK license key during construction.

DataCaptureContext context = DataCaptureContext.ForLicenseKey("-- ENTER YOUR SCANDIT LICENSE KEY HERE --");

Add the Camera​

You need to also create the Camera:

camera = Camera.GetDefaultCamera();

if (camera != null)
{
// Use the settings recommended by id capture.
camera.ApplySettingsAsync(IdCapture.RecommendedCameraSettings);
context.SetFrameSourceAsync(camera);
}

Create ID Capture Settings​

Use IdCaptureSettings to configure the types of documents that you’d like to scan. Check IdDocumentType for all the available options.

::: warning Using IdDocumentType.DlViz or IdDocumentType.IdCardViz together with any MRZ document (IdDocumentType.IdCardMrz,IdDocumentType.VisaMrz, IdDocumentType.PassportMrz, IdDocumentType.SwissDlMrz) while SupportedSides.FrontAndBack is enabled is currently not supported. :::

IdCaptureSettings settings = new IdCaptureSettings
{
SupportedDocuments = IdDocumentType.IdCardViz | IdDocumentType.DlViz | IdDocumentType.AamvaBarcode
};

Implement the Listener​

To receive scan results, implement IIdCaptureListener. A result is delivered as CapturedId. This class contains data common for all kinds of personal identification documents. For more specific information use its non-null result properties (for example CapturedId.AamvaBarcode).

Alternatively to register IIdCaptureListener interface it is possible to subscribe to corresponding events. For example:

idCapture.IdCaptured += (object sender, IdCaptureEventArgs args) =>
{
CapturedId capturedId = args.Session.NewlyCapturedId;

// The recognized fields of the captured ID can vary based on the type.
if (capturedId.CapturedResultType == CapturedResultType.MrzResult)
{
// Handle the information extracted.
}
else if (capturedId.CapturedResultType == CapturedResultType.VizResult)
{
// Handle the information extracted.
}
else if (capturedId.CapturedResultType == CapturedResultType.AamvaBarcodeResult)
{
// Handle the information extracted.
}
else if (capturedId.CapturedResultType == CapturedResultType.UsUniformedServicesBarcodeResult)
{
// Handle the information extracted.
}
};

Create a new ID Capture mode with the chosen settings. Then register the listener:

idCapture = IdCapture.Create(context, settings);
idCapture.AddListener(new MyListener())

Use a Capture View to Visualize the Scan Process​

When using the built-in camera as frame source, you will typically want to display the camera preview on the screen together with UI elements that guide the user through the capturing process. To do that, add a DataCaptureView to your view hierarchy:

DataCaptureView dataCaptureView = DataCaptureView.Create(dataCaptureContext, View.Bounds);
View.AddSubview(dataCaptureView);

Then create an instance of IdCaptureOverlay attached to the view:

overlay = IdCaptureOverlay.Create(idCapture, dataCaptureView);

The overlay chooses the displayed UI automatically, based on the selected IdCaptureSettings. If you prefer to show a different UI or to temporarily hide it, set the appropriate IdCaptureOverlay.IdLayout.

Turn on the Camera​

Finally, turn on the camera to start scanning:

camera.SwitchToDesiredStateAsync(FrameSourceState.On);

And this is it. You can now scan documents.