README.md

react-native-touch-sensor

Bridging for accesing the Touch Sensor on both iOS and Android using TouchID and Android Fingerprint

Installation

npm install -s react-native-touch-sensor react-native link react-native-touch-sensor

Android Setup

Be sure to add the Fingerprint permission to your AndroidManaifest.xml file

<uses-permission android:name="android.permission.USE_FINGERPRINT" />

Currently react-native-touch-sensor requires Android sdk 23 to work. Update this in your app.gradle file

Example

import React, { Component } from 'react'
import { View, Text, Button } from 'react-native'

import Touch from 'react-native-touch-sensor'

export default class TouchExample extends Component {
  

    _isSupported() {
        Touch.isSupported()
            .then( () => alert('Android fingerprint supported'))
            .catch( (error) => alert(`unsupported: ${error}`))
    }
    _authenticatePressed() {
        Touch.authenticate("To test out the app")
            .then( () => alert('authenticated') )
            .catch( (error) => alert(`Failed: ${error}`) )
    }

    render() {
        return (
            <View>
                <Text>Check to see if all conditions are met to use Fingerprint</Text>
                <Button 
                    title="IsSupported()"
                    onPress={() => this._isSupported()}
                    />
                <Text>Begins Authentication process</Text>
                <Button 
                    title="Authenticate()"
                    onPress={() => this._authenticatePressed()}
                    />
            </View>
        );
    }
}

Reference:

TouchID: https://github.com/naoufal/react-native-touch-id
AndroidFingerprint: https://github.com/googlesamples/android-FingerprintDialog
                    https://github.com/jariz/react-native-fingerprint-android
                    https://material.io/guidelines/patterns/fingerprint.html#fingerprint-enrollment