VC Verification Module

This is a common library created to be used in any Sunbird RC platform for VC verification.

This NPM module is developed for scanning the QR(Quick Response) codes inside your Angular applications. This library is designed to be used in sunbird RC platforms.

To use this module you need to follow the below steps

  1. Install the vc-verification npm package in your angular project. Using the below command

npm i vc-verification

2. You need to install the @zxing/ngx-scanner npm module. Before installing this npm module you need to check your angular compatible version with this package version. You can check the details below too.

Run cmd -

npm i @zxing/ngx-scanner@vx.x.x
Angular VersionNgx-scanner version

Angular 9.0.0 <10

v3.0.0, v3.0.1

Angular 10.1.5

v3.1.0, v3.1.1, v3.1.2, v3.1.3

Angular 11.2.11 || ^12.0.4

V3.2.0, v3.3.0

Angular 11.2.11 || ^12.0.4 || ^13.0.0

V3.4.2, v3.5.0

For more detail about compatible version you can check this doc -

3. Import vc-verification and @zxing/ngx-scanner library in your app.module.ts file

import { VerifyModule } from 'vc-verification';
import { ZXingScannerModule } from '@zxing/ngx-scanner';

import * as configData from '../assets/config.json';  // Read config from .json file

// Add configuration in app.module.ts file
const configData = {
  baseUrl: "assets/api/event-detail.json",

  declarations: [
  imports: [
    VerifyModule.forChild(configData),  < —
    ZXingScannerModule, < —
  providers: [],
  bootstrap: [AppComponent]

export class AppModule { }

4.1 Anyone can use the Default Scan template using the sb-vc-verify selector or he/she can use only verify service too.

Add below code in your app.component.html file

 <sb-vc-verification> </sb-vc-verification>

4.2 If anyone wants to change labels and messages from template. You can pass it through item property.


<sb-vc-verification [item]="itemData"></sb-vc-verification>

App.component.ts : Change the value of key

this.itemData = 
       "scanNote”:”To verify any eLocker document, simply scan the QR code that's on the document.”,
       "verify_certificate": 'Verify Certificate',
       "scan_qrcode": 'Scan QR Code',
       "detecting_qrcode": 'Detecting QR code',
       "back": 'Back',
       "certificate_isverified": 'Certificate is verified',
       "verify_another_Certificate": 'Verify another Certificate',
       "cetificate_not_valid": 'This Certificate is not valid',
       “scan_qrcode_again” : ‘Please scan QR code again’


4.3 If anyone wants to use their own he/she can implement their own UI and he/she can use service methods of vc-verification library.

App.component.ts: Import service file in your component where you want to call vc-verification library service method call.

import { VerifyService } from 'verify-module'; 

  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.scss']
export class AppComponent {
  constructor(public verifyService: VerifyService) {

    this.verifyService.scanSuccessHandler(event).then((res) => {


List of service methods

Method NameParameterDescription



To Hide/show scanner screen

scanSuccessHandler($event: any)


This method used to verify scan data

Source Code

The source code to install this example can be found at

Last updated

Change request #266: