Document Capture

This guide has been designed to help you implement the Web SDK quickly and easily. Below, you will find a step-by-step process for the entire integration. After that, if you wish to customize the experience, be sure to check the Web Customization section.

Available Document Frames

In this camera mode, there is a capture frame to assist the user in positioning the document correctly. Once the document is properly positioned, the user must click the button to take a photo of the document.

In this camera mode, it is possible to capture the following documents:

• CPF: Capture the front of the CPF;

• CNH: Capture the open CNH;

• CNH Front: Capture the front of the CNH;

• CNH Back: Capture the back of the CNH;

• RG Front: Capture the front of the RG;

• RG Back: Capture the back of the RG;

• Others: Capture any other document.

Initializing the SDK

To get started, you need to perform 2 simple steps in your project:

Instantiate a new Builder:

const unicoCameraBuilder = new UnicoCheckBuilder();

Specify the path for additional files (if added to your project):

unicoCameraBuilder.setResourceDirectory("/resources");

Configure Frame Size

It is recommended that you configure the size of the frame within your application to optimize the capture area within your WebApp. Below is how to configure this for both Web Desktop and Mobile.

<div class="container">
  <div id="box-camera"></div>
</div>

.container {
  width: 800px;
  height: 600px;
  position: relative;
}

Implementing the Callback functions

One of the objects that must be passed as a parameter to the method responsible for rendering the capture frame is the callback object. This object should contain callback functions for success and error cases, as exemplified below:

  const callback = {
    on: {
      success: (obj) => {
        console.log(obj.base64);
        console.log(obj.encrypted);
      },
      error: (error) => {
        console.error(error)
      },
    }
  };

This object is mandatory, and if it is not correctly implemented (covering all success or error events), it will generate an exception, which, if unhandled, will be displayed in the user's console.

Configure and Start Camera

To start the camera with the configurations made so far, you need to create an instance of the builder using the build() method:

const unicoCamera = unicoCameraBuilder.build();

Next, with the camera "assembled," you need to configure the capture mode of the camera. The camera preparation is done using the prepareDocumentCamera() method, provided by the builder. This method takes 2 parameters:

• The UnicoConfig class obtained in this step;

• The type of document to be captured.

This method returns a promise that, when resolved, returns an object that is used to actually open the camera through the open method, which takes the callback functions configured in the step above as a parameter.

Below is an example using the capture of a driver's license (CNH): Using the UnicoConfig class:

  const config = new UnicoConfig()
    .setProjectNumber("<YOUR_PROJECT_NUMBER>")
    .setProjectId("<YOUR_PROJECT_ID>")
    .setMobileSdkAppId("<YOUR_MOBILE_SDK_APP_ID>")
    .setHostname("<YOUR_HOSTNAME>")
    .setHostInfo("<YOUR_HOST_INFO>")
    .setHostKey("<YOUR_HOST_KEY>");

  unicoCamera.prepareDocumentCamera(
    config, 
    DocumentCameraTypes.CNH
  ).then(cameraOpener => {
    cameraOpener.open(callback);
  }).catch(error => {
    console.error(error);
    // confira na aba "Referências" sobre os erros possíveis
  });

Making a POST Request to the Client API

After capturing images, the next step is to send the generated base64 image from the SDK to the Client APIs.

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