How to use the expo-local-authentication.supportedAuthenticationTypesAsync function in expo-local-authentication

To help you get started, we’ve selected a few expo-local-authentication examples, based on popular ways it is used in public projects.

Secure your code as it's written. Use Snyk Code to scan source code in minutes - no build needed - and fix issues immediately.

github expo / expo / apps / native-component-list / src / screens / LocalAuthenticationScreen.tsx View on Github external
checkAuthenticationsTypes = async () => {
    const result = await LocalAuthentication.supportedAuthenticationTypesAsync();
    const stringResult = result
      .map(type => {
        switch (type) {
          case LocalAuthentication.AuthenticationType.FINGERPRINT:
            return 'FINGERPRINT';
          case LocalAuthentication.AuthenticationType.FACIAL_RECOGNITION:
            return 'FACIAL_RECOGNITION';
            throw new Error(`Unrecognised authentication type returned: '${type}'`);
      .join(', ');
    alert(stringResult ? `Available types: ${stringResult}` : 'No available authentication types!');


Provides an API for FaceID and TouchID (iOS) or the Fingerprint API (Android) to authenticate the user with a face or fingerprint scan.

Latest version published 1 month ago

Package Health Score

92 / 100
Full package analysis