How to check support of Touch ID, Face Id ,Password and pattern lock in React-Native

Question

I have implemented a react-native-fingerprint-scanner, it\'s working for Touch Id.

Now I wanted to add authentication for Touch ID,

Answer 1

react-native-touch-id supports FaceId too. But, is not actively maintained anymore. So, they recommend to use expo local authentication. It works in all react native applications regardless of expo or not.

To use this, first you have to install react-native-unimodules. follow this guide https://docs.expo.io/bare/installing-unimodules/

Once it is installed you can install it by

npm install expo-local-authentication

After that, we can use it.

async function biometricAuth(){
  const compatible = await LocalAuthentication.hasHardwareAsync();
  if (compatible) {
    const hasRecords = await LocalAuthentication.isEnrolledAsync();
    if (hasRecords) {
      const result = await LocalAuthentication.authenticateAsync();
      return result;
    }
  }
}

It will automatically choose between available local authentication (TouchID, FaceID, Number lock, Pattern lock etc) and authenticate the user.