@mantasdb/capacitor-native-biometric v1.0.3

Capacitor Native Biometric

Use biometrics confirm device owner presence or authenticate users. A couple of methods are provided to handle user credentials. These are securely stored using Keychain (iOS) and Keystore (Android).

Installation (Only supports Capacitor 3)

• npm i capacitor-native-biometric

Usage

import { NativeBiometric } from "capacitor-native-biometric";

// Check if biometrics are available and which type is supported
NativeBiometric.isAvailable().then(
  (result: AvailableResult) => {
    const isAvailable = result.isAvailable;
    const isFaceId = result.biometryType == BiometryType.FACE_ID;

    if (isAvailable) {
      // Get user's credentials
      NativeBiometric.getCredentials({
        server: "www.example.com",
      }).then((credentials: Credentials) => {
        // Authenticate using biometrics before logging the user in
        NativeBiometric.verifyIdentity({
          reason: "For easy log in",
          title: "Log in",
          subtitle: "Maybe add subtitle here?",
          description: "Maybe a description too?",
          retries: 3,
        }).then(
          () => {
            // Authentication successful
            this.login(credentials.username, credentials.password);
          },
          (error) => {
            // Failed to authenticate
          }
        );
      });
    }
  },
  (error) => {
    // Couldn't check availability
  }
);

// Save user's credentials
NativeBiometric.setCredentials({
  username: "username",
  password: "password",
  server: "www.example.com",
}).then();

// Delete user's credentials
NativeBiometric.deleteCredentials({
  server: "www.example.com",
}).then();

Methods

Interfaces

AvailableOptions

BiometryType - enum

BiometricOptions

VerifyIdentityErrors

SetCredentialOptions

GetCredentialOptions

DeleteCredentialOptions

Face ID (iOS)

To use FaceID Make sure to provide a value for NSFaceIDUsageDescription, otherwise your app may crash on iOS devices with FaceID.

This value is just the reason for using FaceID. You can add something like the following example to App/info.plist:

<key>NSFaceIDUsageDescription</key>
<string>For an easier and faster log in.</string>

Biometric (Android)

To use android's BiometricPrompt api you must add the following permission to your AndroidManifest.xml:

<uses-permission android:name="android.permission.USE_BIOMETRIC">

And register the plugin by adding it to you MainActivity's onCreate (Not needed for Capacitor 3):

import com.epicshaggy.biometric.NativeBiometric;

public class MainActivity extends BridgeActivity {
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    // Initializes the Bridge
    this.init(savedInstanceState, new ArrayList<Class<? extends Plugin>>() {{
      // Additional plugins you've installed go here
      // Ex: add(TotallyAwesomePlugin.class);
      add(NativeBiometric.class);
    }});
  }
}

Contributors

Jonthia One Click Web Studio

Notes

Hasn't been tested on Android API level 22 or lower.