Fingerprint Protection

You can easily protect stored data and unlocking it using fingerprint on Android, TouchID or FaceID on iOS. Before you proceed is important to check if user's device has any kind of sensors available.

Prerequisites

Android

You need to add these permissions into your Android's manifest file:

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

iOS

You need to add this permission into Info.plist:

<key>NSFaceIDUsageDescription</key><string>ADD_WHY_YOU_NEED_FACEID_PERMISSION</string>

Saving

import SInfo from 'react-native-sensitive-info';
// To check if any sensor is available on iOS/Androidconst hasAnySensors = await SInfo.isSensorAvailable();
// on Android you can check if has any fingersprints enrolledconst hasAnyFingerprintsEnrolled = await SInfo.hasEnrolledFingerprints();

After checking those infos, you need to pass a few options into setItem's method:

import SInfo from 'react-native-sensitive-info';
const savingFirstData = await SInfo.setItem('key1', 'value1', {    sharedPreferencesName: 'mySharedPrefs',    keychainService: 'myKeychain',    touchId: true, //add this key    kSecAccessControl: 'kSecAccessControlBiometryAny' // optional - Add support for FaceID});

Setting touchId: true will store and protect your data by requiring to unlock using fingerprint or FaceID

Getting

To get protected data from user's device you just do:

import SInfo from 'react-native-sensitive-info';
const protectedData = await SInfo.getItem('key1', {    touchID: true,    showModal: true, //required (Android) - Will prompt user's fingerprint on Android    strings: { // optional (Android) - You can personalize your prompt        description: 'Custom Title ',        header: 'Custom Description',    },    kSecUseOperationPrompt: // required (iOS) -  A fallback string for iOS        'We need your permission to retrieve encrypted data',});