CAF SDK Flutter Plugin #

A Flutter plugin that provides native integration with the CAF (Combate à Fraude) SDK, enabling document detection, face liveness verification, and related UI components in Flutter applications.

Features #

• Document Detector - Detect and validate identity documents
• Document Detector UI - Pre-built UI components for document capture
• Face Liveness - Verify face liveness for biometric authentication
• Face Liveness UI - Pre-built UI components for face capture
• Cross-platform - Native implementation for both Android and iOS
• Event-driven - Stream-based event handling for real-time updates

Installation #

Add this to your package's pubspec.yaml file:

dependencies:
  caf_sdk: ^1.0.0

Then run:

flutter pub get

Platform Setup #

Android #

1. Add the following permissions to your android/app/src/main/AndroidManifest.xml:

  <uses-permission android:name="android.permission.CAMERA" />
  <uses-permission android:name="android.permission.INTERNET" />
  <uses-permission android:name="android.permission.android.permission.READ_EXTERNAL_STORAGE" />

2. Ensure your android/app/build.gradle has the minimum SDK version:

android {
    defaultConfig {
        minSdkVersion 26
        // ... other configurations
    }
}

iOS #

1. Add camera usage description to your ios/Runner/Info.plist:

  <key>NSCameraUsageDescription</key>
  <string>Allows access to the camera to capture document images.</string>
  <key>NSPhotoLibraryUsageDescription</key>
  <string>Allows access to stored files and images for processing, if necessary.</string>
  <key>UILaunchStoryboardName</key>

2. Ensure your iOS deployment target is at least 11.0 in ios/Podfile:

platform :ios, '11.0'

Usage #

Basic Setup #

import 'package:caf_sdk/caf_sdk.dart';

final config = CafSdkConfiguration(
  mobileToken: 'token',
  personId: 'personId',
  environment: CafEnvironment.dev,
  configuration: CafSdkBuilderConfiguration(
    presentationOrder: [
      CafModuleType.faceLiveness,
      CafModuleType.documentDetector,
    ],
    waitForAllServices: true,
  ),
);

// Face Liveness Configuration
final faceLivenessConfig = CafFaceLivenessConfiguration(
  configuration: CafFaceLivenessBuilderConfiguration(
    loading: true,
    debugModeEnabled: true,
  ),
);

// Document Detector Configuration
final documentDetectorConfig = CafDocumentDetectorConfiguration(
  configuration: CafDocumentDetectorBuilderConfiguration(
    flow: [
      CafDocumentDetectorFlow(document: CafDocument.rgFront),
      CafDocumentDetectorFlow(document: CafDocument.rgBack),
    ],
    uploadSettings: CafDocumentDetectorUploadSettings(enable: false),
    manualCaptureEnabled: false,
    manualCaptureTime: 45,
    showPopup: true,
    previewShow: false,
    securitySettings: CafDocumentDetectorSecuritySettings(
      useAdb: true,
      useDebug: true,
      useDevelopmentMode: true,
    ),
  ),
);

await _cafSdk.initializeCafSdk(
  cafSdkConfiguration: config,
  faceLivenessConfiguration: faceLivenessConfig,
  documentDetectorConfiguration: documentDetectorConfig,
);

Event Handling #

// Listen to SDK events
void _initializeEventStream() {
  _eventSubscription = _cafSdk.eventStream.listen((event) {
    if (!mounted) return;

    print('Caf SDK Event: $event');
  });
}

Configuration #

The plugin supports extensive configuration options for each module:

• CafSdkConfiguration - Main SDK configuration
• CafDocumentDetectorConfiguration - Document detection settings
• CafDocumentDetectorUIConfiguration - Document UI customization
• CafFaceLivenessConfiguration - Face liveness settings
• CafFaceLivenessUIConfiguration - Face UI customization

Refer to the API documentation for detailed configuration options.

Example #

Check out the example app for a complete implementation example.

Requirements #

• Flutter >= 3.3.0
• Dart ^3.9.0
• Android API level 26+
• iOS 11.0+

Support #

For support and questions:

• Check the example app for implementation details
• Review the SDK documentation
• Contact the development team for technical support

License #

This plugin is proprietary software. Please refer to the license terms for usage rights and restrictions.