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hieuvp
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Description

Provide Fingerprint, Touch ID, and Face ID Scanner for React Native (Compatible with both Android and iOS)

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React Native Fingerprint Scanner

React Native Version Version NPM

React Native Fingerprint Scanner is a React Native library for authenticating users with Fingerprint (TouchID).

Table of Contents

iOS Version

The usage of the TouchID is based on a framework, named Local Authentication.

It provides a Default View that prompts the user to place a finger to the iPhone’s button for scanning.

Android Version

4.0.0 Prefers the new native Android BiometricPrompt lib on any Android >= v23 (M) 4.0.0 also DEPRECATES support for the legacy library that provides support for Samsung & MeiZu phones

3.0.2 and below: Using an expandable Android Fingerprint API library, which combines Samsung and MeiZu's official Fingerprint API.

Samsung and MeiZu's Fingerprint SDK supports most devices which system versions less than Android 6.0.

Installation

$ npm install react-native-fingerprint-scanner --save

or

sh
$ yarn add react-native-fingerprint-scanner

Automatic Configuration

For RN >= 0.60

sh
$ cd ios && pod install

For RN < 0.60, use react-native link to add the library to your project:

sh
$ react-native link react-native-fingerprint-scanner

Manual Configuration

iOS

  1. In XCode, in the project navigator, right click
    Libraries
    Add Files to [your project's name]
  2. Go to
    node_modules
    react-native-fingerprint-scanner
    and add
    ReactNativeFingerprintScanner.xcodeproj
  3. In XCode, in the project navigator, select your project. Add
    libReactNativeFingerprintScanner.a
    to your project's
    Build Phases
    Link Binary With Libraries
  4. Run your project (
    Cmd+R
    )

Android

  1. Open up
    android/app/src/main/java/[...]/MainApplication.java
    • Add
      import com.hieuvp.fingerprint.ReactNativeFingerprintScannerPackage;
      to the imports at the top of the file
    • Add
      new ReactNativeFingerprintScannerPackage()
      to the list returned by the
      getPackages()
      method
  2. Append the following lines to
    android/settings.gradle
    :
    include ':react-native-fingerprint-scanner'
    project(':react-native-fingerprint-scanner').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-fingerprint-scanner/android')
    
  3. Insert the following lines inside the dependencies block in
    android/app/build.gradle
    :
    implementation project(':react-native-fingerprint-scanner')
    

App Permissions

Add the following permissions to their respective files:

Android

In your

AndroidManifest.xml
:

API level 28+ (Uses Android native BiometricPrompt) (Reference)

xml

API level 23-28 (Uses Android native FingerprintCompat) Reference)

xml

// DEPRECATED in 4.0.0 API level <23 (Uses device-specific native fingerprinting, if available - Samsung & MeiZu only) [Reference](https://developer.android.com/reference/android/Manifest.permission#USE_FINGERPRINT)) ```xml ```

iOS

In your

Info.plist
:
NSFaceIDUsageDescription
$(PRODUCT_NAME) requires FaceID access to allows you quick and secure access.

Extra Configuration

  1. Make sure the following versions are all correct in

    android/app/build.gradle
    // API v29 enables FaceId
    android {
        compileSdkVersion 29
        buildToolsVersion "29.0.2"
    ...
        defaultConfig {
          targetSdkVersion 29
    
  2. Add necessary rules to

    android/app/proguard-rules.pro
    if you are using proguard: ```

    MeiZu Fingerprint

    // DEPRECATED in 4.0.0 -keep class com.fingerprints.service.** { ; } -dontwarn com.fingerprints.service.*

    Samsung Fingerprint

    // DEPRECATED in 4.0.0 -keep class com.samsung.android.sdk.** { ; } -dontwarn com.samsung.android.sdk.* ```

Compatibility

  • For Gradle < 3 you MUST install react-native-fingerprint-scanner at version <= 2.5.0
  • For RN >= 0.57 and/or Gradle >= 3 you MUST install react-native-fingerprint-scanner at version >= 2.6.0
  • For RN >= 0.60 you MUST install react-native-fingerprint-scanner at version >= 3.0.0
  • For Android native Face Unlock, MUST use >= 4.0.0

Example

Example Source Code

iOS Implementation ```javascript import React, { Component } from 'react'; import PropTypes from 'prop-types'; import { AlertIOS } from 'react-native'; import FingerprintScanner from 'react-native-fingerprint-scanner';

class FingerprintPopup extends Component {

componentDidMount() { FingerprintScanner .authenticate({ description: 'Scan your fingerprint on the device scanner to continue' }) .then(() => { this.props.handlePopupDismissed(); AlertIOS.alert('Authenticated successfully'); }) .catch((error) => { this.props.handlePopupDismissed(); AlertIOS.alert(error.message); }); }

render() { return false; } }

FingerprintPopup.propTypes = { handlePopupDismissed: PropTypes.func.isRequired, };

export default FingerprintPopup; ```

Android Implementation ```javascript

import React, { Component } from 'react'; import PropTypes from 'prop-types'; import { Alert, Image, Text, TouchableOpacity, View, ViewPropTypes, Platform, } from 'react-native';

import FingerprintScanner from 'react-native-fingerprint-scanner'; import styles from './FingerprintPopup.component.styles'; import ShakingText from './ShakingText.component';

// - this example component supports both the // legacy device-specific (Android < v23) and // current (Android >= 23) biometric APIs // - your lib and implementation may not need both class BiometricPopup extends Component { constructor(props) { super(props); this.state = { errorMessageLegacy: undefined, biometricLegacy: undefined };

this.description = null;

}

componentDidMount() { if (this.requiresLegacyAuthentication()) { this.authLegacy(); } else { this.authCurrent(); } }

componentWillUnmount = () => { FingerprintScanner.release(); }

requiresLegacyAuthentication() { return Platform.Version < 23; }

authCurrent() { FingerprintScanner .authenticate({ title: 'Log in with Biometrics' }) .then(() => { this.props.onAuthenticate(); }); }

authLegacy() { FingerprintScanner .authenticate({ onAttempt: this.handleAuthenticationAttemptedLegacy }) .then(() => { this.props.handlePopupDismissedLegacy(); Alert.alert('Fingerprint Authentication', 'Authenticated successfully'); }) .catch((error) => { this.setState({ errorMessageLegacy: error.message, biometricLegacy: error.biometric }); this.description.shake(); }); }

handleAuthenticationAttemptedLegacy = (error) => { this.setState({ errorMessageLegacy: error.message }); this.description.shake(); };

renderLegacy() { const { errorMessageLegacy, biometricLegacy } = this.state; const { style, handlePopupDismissedLegacy } = this.props;

return (
  
    

  <image style="{styles.logo}" source="{require('./assets/finger_print.png')}"></image>

  <text style="{styles.heading}">
    Biometric{'\n'}Authentication
  </text>
  <shakingtext ref="{(instance)"> { this.description = instance; }}
    style={styles.description(!!errorMessageLegacy)}&gt;
    {errorMessageLegacy || `Scan your ${biometricLegacy} on the\ndevice scanner to continue`}
  </shakingtext>

  <touchableopacity style="{styles.buttonContainer}" onpress="{handlePopupDismissedLegacy}">
    <text style="{styles.buttonText}">
      BACK TO MAIN
    </text>
  </touchableopacity>

</view>
);

}

render = () => { if (this.requiresLegacyAuthentication()) { return this.renderLegacy(); }

// current API UI provided by native BiometricPrompt
return null;

} }

BiometricPopup.propTypes = { onAuthenticate: PropTypes.func.isRequired, handlePopupDismissedLegacy: PropTypes.func, style: ViewPropTypes.style, };

export default BiometricPopup; ```

API

isSensorAvailable()
: (Android, iOS)

Checks if Fingerprint Scanner is able to be used by now.

  • Returns a
    Promise
  • biometryType: String
    - The type of biometric authentication supported by the device.
    • iOS: biometryType = 'Touch ID', 'Face ID'
    • Android: biometryType = 'Biometrics'
  • error: FingerprintScannerError { name, message, biometric }
    - The name and message of failure and the biometric type in use.
componentDidMount() {
  FingerprintScanner
    .isSensorAvailable()
    .then(biometryType => this.setState({ biometryType }))
    .catch(error => this.setState({ errorMessage: error.message }));
}

authenticate({ description, fallbackEnabled })
: (iOS)

Starts Fingerprint authentication on iOS.

  • Returns a
    Promise
  • description: String
    - the string to explain the request for user authentication.
  • fallbackEnabled: Boolean
    - default to
    true
    , whether to display fallback button (e.g. Enter Password).
componentDidMount() {
  FingerprintScanner
    .authenticate({ description: 'Scan your fingerprint on the device scanner to continue' })
    .then(() => {
      this.props.handlePopupDismissed();
      AlertIOS.alert('Authenticated successfully');
    })
    .catch((error) => {
      this.props.handlePopupDismissed();
      AlertIOS.alert(error.message);
    });
}

authenticate({ title="Log In", subTitle, description, cancelButton="Cancel", onAttempt=() => (null) })
: (Android)

Starts Fingerprint authentication on Android.

  • Returns a
    Promise
  • title: String
    the title text to display in the native Android popup
  • subTitle: String
    the sub title text to display in the native Android popup
  • description: String
    the description text to display in the native Android popup
  • cancelButton: String
    the cancel button text to display in the native Android popup
  • onAttempt: Function
    - a callback function when users are trying to scan their fingerprint but failed.
componentDidMount() {
  if (requiresLegacyAuthentication()) {
    authLegacy();
  } else {
    authCurrent();
  }
}

componentWillUnmount = () => { FingerprintScanner.release(); }

requiresLegacyAuthentication() { return Platform.Version < 23; }

authCurrent() { FingerprintScanner .authenticate({ title: 'Log in with Biometrics' }) .then(() => { this.props.onAuthenticate(); }); }

authLegacy() { FingerprintScanner .authenticate({ onAttempt: this.handleAuthenticationAttemptedLegacy }) .then(() => { this.props.handlePopupDismissedLegacy(); Alert.alert('Fingerprint Authentication', 'Authenticated successfully'); }) .catch((error) => { this.setState({ errorMessageLegacy: error.message, biometricLegacy: error.biometric }); this.description.shake(); }); }

handleAuthenticationAttemptedLegacy = (error) => { this.setState({ errorMessageLegacy: error.message }); this.description.shake(); };

release()
: (Android)

Stops fingerprint scanner listener, releases cache of internal state in native code, and cancels native prompt if visible.

  • Returns a
    Void
componentWillUnmount() {
  FingerprintScanner.release();
}

Types of Biometrics

| Value | OS | Description| |---|---|---| | Touch ID | iOS | | | Face ID | iOS | | | Biometrics | Android | Refers to the biometric set as preferred on the device |

Errors

| Name | Message | |---|---| | AuthenticationNotMatch | No match | | AuthenticationFailed | Authentication was not successful because the user failed to provide valid credentials | | AuthenticationTimeout | Authentication was not successful because the operation timed out | | AuthenticationProcessFailed | 'Sensor was unable to process the image. Please try again | | UserCancel | Authentication was canceled by the user - e.g. the user tapped Cancel in the dialog | | UserFallback | Authentication was canceled because the user tapped the fallback button (Enter Password) | | SystemCancel | Authentication was canceled by system - e.g. if another application came to foreground while the authentication dialog was up | | PasscodeNotSet | Authentication could not start because the passcode is not set on the device | | DeviceLocked | Authentication was not successful, the device currently in a lockout of 30 seconds | | DeviceLockedPermanent | Authentication was not successful, device must be unlocked via password | | DeviceOutOfMemory | Authentication could not proceed because there is not enough free memory on the device | | HardwareError | A hardware error occurred | | FingerprintScannerUnknownError | Could not authenticate for an unknown reason | | FingerprintScannerNotSupported | Device does not support Fingerprint Scanner | | FingerprintScannerNotEnrolled | Authentication could not start because Fingerprint Scanner has no enrolled fingers | | FingerprintScannerNotAvailable | Authentication could not start because Fingerprint Scanner is not available on the device |

License

MIT

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