API Reference
中文

Flutter

Only supports Android and iOS

Integrated Requirement

Compliance Explanation

Please note that when integrating SDK products provided by the TrustDecision in the APP of your company:

1.1 According to the user's information protection regulations, before your users start the App for the first time and start collecting information, your company should fully inform the user of the purpose, method, and scope of collecting, using, and sharing the user's personal information with a third party through an interactive interface or design (such as a pop-up window of the privacy policy), and obtain the express consent of the end user.

1.2 To provide business security and risk control services to your company, the TrustDecision SDK will collect, process, and use the identification information(IMEI/IDFA), AndroidID, IMSI, MEID, MAC address, SIM card serial number, device type, device model, system type, geographical location, login IP address, application list, running process, sensor information(light sensor, gravity sensor, magnetic field sensor, acceleration sensor, gyroscope sensor) and other device information of the user's device. To ensure compliance with your use of related services, the aforementioned privacy policy should cover the authorization of TrustDecision SDK to provide services and collect, process, and use relevant information. The following terms are for your reference. The specific expression can be determined by your company according to the overall framework and content of your privacy agreement:

TrustDecision SDK: For business security and risk control, our company uses the TrustDecision SDK. The SDK needs to obtain the information of your devices, such as (IMEI/IDFA), AndroidID, IMSI, MAC address, SIM card serial number, device type, device model, system type, geographic location, login IP address, application list, running process, sensor information(light sensor, gravity sensor, magnetic field sensor, acceleration sensor, gyroscope sensor) and other related device information, for fraud risk identification.

Privacy Protocol: https://www.trustdecision.com/legal/privacy-policy

Environment

AndroidiOS
Supported System VersionsAndroid 5.0 and aboveiOS 9.0 and above
Supported Architecturesarmeabi, armeabi-v7a, arm64-v8a, x86armv7,arm64,x86_64

Integrate

There are 3 steps to integrate Liveness Detection SDK:

  1. Use the Retrive license API to get a license within the effective timeframe.
  2. Install the Liveness Detection SDK Flutter Plugin then get the "livenessId".
  3. Use the Retrive result API with the "livenessId" generated in Step 2 to obtain a selfie if the liveness detection is successful, or receive detailed results in case of failure.

1. Retrive license API

Please follow the steps in https://en-doc.trustdecision.com/reference/liveness-api#retrive-license-api

2.Install the Liveness Detection SDK Flutter Plugin

Plugin Install

Add trustdevice_pro_plugin to pubspec.yaml of your project.

dependencies:
  flutter:
    sdk: flutter
  ...
  trustdevice_pro_plugin: ^1.3.4

AndroidManifest.xml

Declare the following permissions in the AndroidManifest.xml file under the application module

<manifest>
   <!-- required -->
   <uses-permission android:name="android.permission.INTERNET"/>
   <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
   <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
  <!-- Outside the Chinese Mainland -->
  <uses-permission android:name="com.google.android.gms.permission.AD_ID"/>

   <!--optional, If not declared, some device information will be abandoned -->
   <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
   <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
   <uses-permission android:name="android.permission.READ_PHONE_STATE" />
   <!-- required for Android 11 and above to obtain the installed packages -->
   <uses-permission android:name="android.permission.QUERY_ALL_PACKAGES"
        tools:ignore="QueryAllPackagesPermission" />
</manifest>

Permissions

NameDescription
INTERNET(required)Allows the app to access the network connection and send requests to communicate with the server.
ACCESS_NETWORK_STATE(required)Collect network connection status information.
ACCESS_WIFI_STATE(required)Collect the current WiFi access status and WLAN hotspot information.
AD_ID(required)Collect the Google advertising ID, required outside the Chinese Mainland.
ACCESS_COARSE_LOCATIONGet location information, with an accuracy of approximately 30 to 1500 meters.
ACCESS_FINE_LOCATIONGet location information, with positioning accuracy within 10 meters.
READ_PHONE_STATECollect information on SIM card
QUERY_ALL_PACKAGESCollect installed packages

Initialization

Cautions

  • Ensure that it is initialized after the user agrees to the privacy agreement.

Definition

  Future<void> initWithOptions(Map<String, dynamic> config)

Get blackBox

Cautions

  • Call getBlackBox after initWithOptions.
  • Don't cache blackBox returned by getBlackBox in the app. Please rely on this function to get blackBox.

Definition

  // get by synchronous call 
  Future<String> getBlackBox()
  // get by asynchronous call
  Future<String> getBlackBoxAsync();

Best Practices

  1. Call initialization in the onCreate method of the application, and obtain blackBox asynchronously
import 'package:trustdevice_pro_plugin/trustdevice_pro_plugin.dart';

class _MyAppState extends State<MyApp> {
  final _trustdeviceProPlugin = TrustdeviceProPlugin();
  
  @override
  void initState() {
    super.initState();
    _initWithOptions();
  }
  
  Future<void> _initWithOptions() async {
     var options = {
      "partner": "",
      "appKey": "",
      "appName": "",
      "country": ""
    };
    //Anti debugging switch, used during development phase
 		options["debug"] = true;
    _trustdeviceProPlugin.initWithOptions(options);
    var blackBox = await _trustdeviceProPlugin.getBlackBoxAsync();
    print("_initWithOptions blackBox: ${blackBox}");
  }
  
}
  1. Obtain blackBox in actual business scenarios
Future<void> _register() async {
   var blackBox = await _trustdeviceProPlugin.getBlackBox();
   // ...
}

Status Check

  1. getBlackBox() will return a 26-bit string while initialization successfully: rGPGX1678775227I9NCwcuVJCb
  2. getBlackBox() will return a string of around 5000 bits while initialization Failed, please refer to overview-definition

Other

Get SDK Version

  Future<String> getSDKVersion()

Keep Configuration

-keep class com.trustdecision.**{*;}

All Configuration

KeyDescription平台Sample
partner(required)Partner code, contact operator to obtain.Alloptions["partner"] = "your partner"
appKey(required)Application identification, please refer tohow to get appKeyAlloptions["appKey"] = "your appKey"
country(required)Data-center: cn for China fra for Europe sg for Singapore inda for Indonesia us for the USAAlloptions["country"] = "your country"
appNameApplication name, contact operator to obtainAlloptions["appName"] = "your appName"
debugAllow debugging, default false, must be closed before the application release.Alloptions["debug"] = true
timeLimitNetwork timeout configuration, in seconds, default 15sAlloptions["timeLimit"] = 5
locationwhether collecting GPS location information, default allowedAlloptions["location"] = true
collectLevelYou can set M to control the maximum length of blackBox to 2000, default around 5000Alloptions["collectLevel"] = "M"
IDFAWhether collecting IDFA information, default allowediOSoptions["IDFA"] = true
deviceNameWhether collecting device name, default allowediOSoptions["deviceName"] = true
runningTasksWhether collecting running tasks, default allowedAndroidoptions["runningTasks"] = true
sensorWhether collecting sensor information, default allowedAndroidoptions["sensor"] = true
readPhoneWhether collecting READ PHONE STATE permission-related information, default allowedAndroidoptions["readPhone"] = true
installPackageListWhether collecting application list information, default allowedAndroidoptions["installPackageList"] = true

Liveness Module

Install the Liveness Module dependency

iOS

1.Double-click to open the Runner.xcworkspace project;

2.Find the trustdevice_pro_plugin.podspec file;

3.Add the liveness module dependency in the trustdevice_pro_plugin.podspec file

s.dependency 'TrustDecisionLiveness'

4.In the folder where Runner.xcworkspace is located, execute

pod install --repo-update

Android

1.Open the android/build.gradle file

2.Add live library dependency in android/build.gradle file

dependencies {
    implementation 'com.trustdecision.android:liveness:+'
}

Initial configuration optional parameter list

Key Definition Description Scene Sample code
language language type Liveness detection prompt language
Default: en English Options:
en English
zh-Hans Simplified Chinese
zh-Hant Traditional Chinese
es Spanish
id Indonesian
ar Arabic
fil Filipino
ko Korean
pt Portuguese
ru Russian
th Thai
tr Turkish
vi Vietnamese
options["language"] = "en"
playAudio Whether to play audio The default is NO, no audio will be played When turned on, the corresponding prompt audio will be played options["playAudio"] = false
livenessDetectionThreshold Difficulty threshold for live detection Difficulty threshold for live detection, divided into three levels: high, medium, and low The default is medium Adjust to corresponding difficulty as needed options["livenessDetectionThreshold"] = "medium"
livenessHttpTimeOut SDK network timeout configuration (unit: seconds) Default is 15s Customers can set the network timeout according to their needs options["livenessHttpTimeOut"] = 8
showReadyPage When starting the face, the detection preparation page will pop up Whether to display the preparation page, the default is YES, which means it will be displayed After closing, the preparation page will not be displayed, and the identification process will be shorter options["showReadyPage"] = true
faceMissingInterval Timeout when no face is detected (unit: milliseconds) No face timeout, unit ms, default is 1000ms Set the timeout period when no face is detected as needed options["faceMissingInterval"] = 1000
prepareStageTimeout The starting time when preparing to detect the action (unit: seconds) Preparation phase timeout, in seconds, the default is 0S, that is, it will never time out Set the preparation phase timeout as needed options["prepareStageTimeout"] = 0
actionStageTimeout In the action phase, the maximum verification time (unit: seconds) Action phase timeout, unit second, default is 8S Set the action phase timeout as needed options["actionStageTimeout"] = 8

Popup Liveness Window

Example Code

    String license = "please use your license!!!";

    await _trustdeviceProPlugin.showLiveness(license,TDLivenessCallback(onSuccess: (String seqId,int errorCode,String errorMsg,double score,String bestImageString,String livenessId) {
          print("Liveness success!seqId: $seqId,livenessId:$livenessId,bestImageString:$bestImageString");
       }, onFailed: (String seqId,int errorCode,String errorMsg,String livenessId) {
          print("Liveness failed!, errorCode: $errorCode errorMsg: $errorMsg");
    }));

Error Code

CodeMessage
200success (live person)
20700No face detected
20702Person change detected
20703Detection timeout
20705Screen lock or background exit during detection
20710No camera permission
20711User actively cancels detection on the preparation page
20712User actively cancels detection on the detection page
20731Face not centered
20732Face not facing the screen
20749Inconsistent action, tilt head down
60001Network issue, failed to retrieve session
60002Network issue, failed to call anti-hack
11350Internal error

3. Retrive result API

Please follow the steps in https://en-doc.trustdecision.com/reference/liveness-api#retrive-result-api