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).

• npm i @capgo/capacitor-native-biometric

import { NativeBiometric, BiometryType } from "@capgo/capacitor-native-biometric";

async performBiometricVerification(){
  const result = await NativeBiometric.isAvailable();

  if(!result.isAvailable) return;

  const isFaceID = result.biometryType == BiometryType.FACE_ID;

  const verified = await NativeBiometric.verifyIdentity({
    reason: "For easy log in",
    title: "Log in",
    subtitle: "Maybe add subtitle here?",
    description: "Maybe a description too?",
  })
    .then(() => true)
    .catch(() => false);

  if(!verified) return;

  const credentials = await NativeBiometric.getCredentials({
    server: "www.example.com",
  });
}

// 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();

This is a plugin specific list of error codes that can be thrown on verifyIdentity failure, or set as a part of isAvailable. It consolidates Android and iOS specific Authentication Error codes into one combined error list.

• isAvailable(...)
• verifyIdentity(...)
• getCredentials(...)
• setCredentials(...)
• deleteCredentials(...)
• Interfaces
• Enums

isAvailable(options?: IsAvailableOptions | undefined) => any

Checks if biometric authentication hardware is available.

Returns: any

Since: 1.0.0

verifyIdentity(options?: BiometricOptions | undefined) => any

Prompts the user to authenticate with biometrics.

Returns: any

Since: 1.0.0

getCredentials(options: GetCredentialOptions) => any

Gets the stored credentials for a given server.

Returns: any

Since: 1.0.0

setCredentials(options: SetCredentialOptions) => any

Stores the given credentials for a given server.

Returns: any

Since: 1.0.0

deleteCredentials(options: DeleteCredentialOptions) => any

Deletes the stored credentials for a given server.

Returns: any

Since: 1.0.0

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>

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 ee.forgr.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);
    }});
  }
}

Jonthia One Click Web Studio Brian Weasner Mohamed Diarra

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