Native Biometric の導入

インストール

AI-Assisted セットアップを使用してプラグインをインストールできます。AIツールに Capgo スキルを追加するには、以下のコマンドを実行してください:

npx skills add https://github.com/Cap-go/capgo-skills --skill capacitor-plugins

次に、以下のプロンプトを使用してください:

Use the `capacitor-plugins` skill from `Cap-go/capgo-skills` to install the `@capgo/capacitor-native-biometric` plugin in my project.

Manual セットアップを使用する場合は、以下のコマンドを実行してプラグインをインストールし、以下のプラットフォーム固有の手順に従ってください:

bun add @capgo/capacitor-native-biometric
bunx cap sync

インポート

import { NativeBiometric } from '@capgo/capacitor-native-biometric';

API まとめ

isAvailable

biometric認証ハードウェアが利用可能であるかを確認します。

import { NativeBiometric } from '@capgo/capacitor-native-biometric';

const result = await NativeBiometric.isAvailable();
console.log(result);

verifyIdentity

ユーザーにバイオメトリック認証を求めます。

import { NativeBiometric } from '@capgo/capacitor-native-biometric';

await NativeBiometric.verifyIdentity();

getCredentials

getCredentials

import { NativeBiometric } from '@capgo/capacitor-native-biometric';

const result = await NativeBiometric.getCredentials({ server: 'example.com' });
// The result holds sensitive values: use it without logging it.

setCredentials

指定されたサーバーに保存するために与えられた資格情報を格納します。

import { NativeBiometric } from '@capgo/capacitor-native-biometric';

await NativeBiometric.setCredentials({
  username: 'username',
  password: 'password',
  server: 'example.com',
});

deleteCredentials

指定されたサーバーに保存されている資格情報を削除します。

import { NativeBiometric } from '@capgo/capacitor-native-biometric';

await NativeBiometric.deleteCredentials({ server: 'example.com' });

getSecureCredentials

指定されたサーバーに保存されている資格情報を取得します。BIOMETRY_CURRENT_SETまたはBIOMETRY_ANYでアクセス制御を設定した資格情報のみ取得できます。

iOSでは、保護されたKeychainアイテムにアクセスすると、システムが自動的にバイオメトリックのプロンプトを表示します。 Androidでは、資格情報の暗号化キーにバインドされたCryptoObjectが提示されたBiometricPromptが表示されます。

import { NativeBiometric } from '@capgo/capacitor-native-biometric';

const result = await NativeBiometric.getSecureCredentials({ server: 'example.com' });
// The result holds sensitive values: use it without logging it.

isCredentialsSaved

指定されたサーバーに既に資格情報が保存されているかどうかを確認します。

import { NativeBiometric } from '@capgo/capacitor-native-biometric';

const result = await NativeBiometric.isCredentialsSaved({ server: 'example.com' });
console.log(result);

種類の参照

IsAvailableOptions

export interface IsAvailableOptions {
  /**
   * Only for iOS.
   * Specifies if should fallback to passcode authentication if biometric authentication is not available.
   * On Android, this parameter is ignored due to BiometricPrompt API constraints:
   * DEVICE_CREDENTIAL authenticator and negative button (cancel) are mutually exclusive.
   */
  useFallback: boolean;
}

AvailableResult

biometric認証の利用可能性を示すisAvailable()メソッドの結果

export interface AvailableResult {
  /**
   * Whether authentication is available (biometric or fallback if useFallback is true)
   */
  isAvailable: boolean;
  /**
   * The strength of available authentication method (STRONG, WEAK, or NONE)
   */
  authenticationStrength: AuthenticationStrength;
  /**
   * The primary biometry type available on the device.
   * On Android devices with multiple biometry types, this returns MULTIPLE.
   * Use this for display purposes only - always use isAvailable for logic decisions.
   */
  biometryType: BiometryType;
  /**
   * Whether the device has a secure lock screen (PIN, pattern, or password).
   * This is independent of biometric enrollment.
   */
  deviceIsSecure: boolean;
  /**
   * Whether strong biometry (Face ID, Touch ID, or fingerprint on devices that consider it strong)
   * is specifically available, separate from weak biometry or device credentials.
   */
  strongBiometryIsAvailable: boolean;
  /**
   * Error code from BiometricAuthError enum. Only present when isAvailable is false.
   * Indicates why biometric authentication is not available.
   * @see BiometricAuthError
   */
  errorCode?: BiometricAuthError;
}

BiometryChangeListener

biometryの変更を検知するためのコールバック

export type BiometryChangeListener = (result: AvailableResult) => void;

BiometricOptions

export interface BiometricOptions {
  reason?: string;
  title?: string;
  subtitle?: string;
  description?: string;
  negativeButtonText?: string;
  /**
   * Only for iOS.
   * Specifies if should fallback to passcode authentication if biometric authentication fails.
   * On Android, this parameter is ignored due to BiometricPrompt API constraints:
   * DEVICE_CREDENTIAL authenticator and negative button (cancel) are mutually exclusive.
   */
  useFallback?: boolean;
  /**
   * Only for iOS.
   * Set the text for the fallback button in the authentication dialog.
   * If this property is not specified, the default text is set by the system.
   */
  fallbackTitle?: string;
  /**
   * Only for Android.
   * Set a maximum number of attempts for biometric authentication. The maximum allowed by android is 5.
   * @default 1
   */
  maxAttempts?: number;
  /**
   * Only for Android.
   * Specify which biometry types are allowed for authentication.
   * If not specified, all available types will be allowed.
   * @example [BiometryType.FINGERPRINT, BiometryType.FACE_AUTHENTICATION]
   */
  allowedBiometryTypes?: BiometryType[];
}

GetCredentialOptions

export interface GetCredentialOptions {
  server: string;
}

Credentials

export interface Credentials {
  username: string;
  password: string;
}

SetCredentialOptions

export interface SetCredentialOptions {
  username: string;
  password: string;
  server: string;
  /**
   * Access control level for the stored credentials.
   * When set to BIOMETRY_CURRENT_SET or BIOMETRY_ANY, the credentials are
   * hardware-protected and require biometric authentication to access.
   *
   * On iOS, this adds SecAccessControl to the Keychain item.
   * On Android, this creates a biometric-protected Keystore key and requires
   * BiometricPrompt authentication for both storing and retrieving credentials.
   *
   * @default AccessControl.NONE
   * @since 8.4.0
   */
  accessControl?: AccessControl;
}

DeleteCredentialOptions

export interface DeleteCredentialOptions {
  server: string;
}

GetSecureCredentialsOptions

export interface GetSecureCredentialsOptions {
  server: string;
  /**
   * Reason for requesting biometric authentication.
   * Displayed in the biometric prompt on both iOS and Android.
   */
  reason?: string;
  /**
   * Title for the biometric prompt.
   * Only for Android.
   */
  title?: string;
  /**
   * Subtitle for the biometric prompt.
   * Only for Android.
   */
  subtitle?: string;
  /**
   * Description for the biometric prompt.
   * Only for Android.
   */
  description?: string;
  /**
   * Text for the negative/cancel button.
   * Only for Android.
   */
  negativeButtonText?: string;
}

IsCredentialsSavedOptions

export interface IsCredentialsSavedOptions {
  server: string;
}

IsCredentialsSavedResult

export interface IsCredentialsSavedResult {
  isSaved: boolean;
}

AuthenticationStrength

export enum AuthenticationStrength {
  /**
   * No authentication available, even if PIN is available but useFallback = false
   */
  NONE = 0,
  /**
   * Strong authentication: Face ID on iOS, fingerprints on devices that consider fingerprints strong (Android).
   * Note: PIN/pattern/password is NEVER considered STRONG, even when useFallback = true.
   */
  STRONG = 1,
  /**
   * Weak authentication: Face authentication on Android devices that consider face weak,
   * or PIN/pattern/password if useFallback = true (PIN is always WEAK, never STRONG).
   */
  WEAK = 2,
}

真実の源

このページはプラグインから生成されています。 src/definitions.tsパブリック API がアップストリームで変更されたときは、再度同期を実行してください。

Getting Started から続けてください

あなたが使用している場合 Native Biometric の導入 認証とアカウントフローの計画に役立つため、接続してください。 @capgo/capacitor-native-biometric Using @capgo/capacitor-native-biometric Using @capgo/capacitor-social-login Using @capgo/capacitor-social-login Using @capgo/capacitor-passkey Using @capgo/capacitor-passkey Using @capgo/capacitor-native-biometric Using @capgo/capacitor-native-biometric 2要素認証 2要素認証