diff --git a/.idea/codeStyles/Project.xml b/.idea/codeStyles/Project.xml
index 3c7772a..208123b 100644
--- a/.idea/codeStyles/Project.xml
+++ b/.idea/codeStyles/Project.xml
@@ -3,18 +3,9 @@
     <JetCodeStyleSettings>
       <option name="PACKAGES_TO_USE_STAR_IMPORTS">
         <value>
-          <package name="java.util" alias="false" withSubpackages="false" />
-          <package name="kotlinx.android.synthetic" alias="false" withSubpackages="true" />
-          <package name="io.ktor" alias="false" withSubpackages="true" />
-        </value>
-      </option>
-      <option name="PACKAGES_IMPORT_LAYOUT">
-        <value>
-          <package name="" alias="false" withSubpackages="true" />
-          <package name="java" alias="false" withSubpackages="true" />
-          <package name="javax" alias="false" withSubpackages="true" />
-          <package name="kotlin" alias="false" withSubpackages="true" />
-          <package name="" alias="true" withSubpackages="true" />
+          <package name="java.util" withSubpackages="false" static="false" />
+          <package name="kotlinx.android.synthetic" withSubpackages="true" static="false" />
+          <package name="io.ktor" withSubpackages="true" static="false" />
         </value>
       </option>
       <option name="CODE_STYLE_DEFAULTS" value="KOTLIN_OFFICIAL" />
diff --git a/.idea/compiler.xml b/.idea/compiler.xml
index fb7f4a8..61a9130 100644
--- a/.idea/compiler.xml
+++ b/.idea/compiler.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="CompilerConfiguration">
-    <bytecodeTargetLevel target="11" />
+    <bytecodeTargetLevel target="1.8" />
   </component>
 </project>
\ No newline at end of file
diff --git a/.idea/gradle.xml b/.idea/gradle.xml
index ac6b0ae..23a89bb 100644
--- a/.idea/gradle.xml
+++ b/.idea/gradle.xml
@@ -15,6 +15,7 @@
           </set>
         </option>
         <option name="resolveModulePerSourceSet" value="false" />
+        <option name="useQualifiedModuleNames" value="true" />
       </GradleProjectSettings>
     </option>
   </component>
diff --git a/.idea/misc.xml b/.idea/misc.xml
index 4700283..d5d35ec 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_11" default="false" project-jdk-name="1.8" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" default="true" project-jdk-name="1.8" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/build/classes" />
   </component>
   <component name="ProjectType">
diff --git a/.idea/runConfigurations.xml b/.idea/runConfigurations.xml
deleted file mode 100644
index 797acea..0000000
--- a/.idea/runConfigurations.xml
+++ /dev/null
@@ -1,10 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="RunConfigurationProducerService">
-    <option name="ignoredProducers">
-      <set>
-        <option value="com.android.tools.idea.compose.preview.runconfiguration.ComposePreviewRunConfigurationProducer" />
-      </set>
-    </option>
-  </component>
-</project>
\ No newline at end of file
diff --git a/app/build.gradle b/app/build.gradle
index ce37383..ae00e97 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -96,4 +96,7 @@ dependencies {
     //implementation "com.google.dagger:hilt-android-testing:$hilt_ver"
     implementation "androidx.hilt:hilt-common:1.0.0-alpha03"
     implementation "androidx.hilt:hilt-lifecycle-viewmodel:1.0.0-alpha03"
+
+    //Bio-metric
+    implementation 'androidx.biometric:biometric:1.2.0-alpha03'
 }
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 637e37e..d7ce326 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -3,7 +3,8 @@
     package="dev.spikeysanju.expensetracker">
 
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
-
+    <uses-permission android:name="android.permission.USE_BIOMETRIC"
+        android:requiredFeature="true"/>
 
     <application
         android:name=".app.ExpenseTracker"
diff --git a/app/src/main/java/dev/spikeysanju/expensetracker/data/local/datastore/PrefsDataStore.kt b/app/src/main/java/dev/spikeysanju/expensetracker/data/local/datastore/PrefsDataStore.kt
new file mode 100644
index 0000000..6b18705
--- /dev/null
+++ b/app/src/main/java/dev/spikeysanju/expensetracker/data/local/datastore/PrefsDataStore.kt
@@ -0,0 +1,11 @@
+package dev.spikeysanju.expensetracker.data.local.datastore
+
+import android.content.Context
+import androidx.datastore.core.DataStore
+import androidx.datastore.preferences.core.Preferences
+import androidx.datastore.preferences.createDataStore
+
+
+abstract class PrefsDataStore(context: Context, fileName: String) {
+    internal val dataStore: DataStore<Preferences> = context.createDataStore(fileName)
+}
diff --git a/app/src/main/java/dev/spikeysanju/expensetracker/data/local/datastore/SettingsDataStore.kt b/app/src/main/java/dev/spikeysanju/expensetracker/data/local/datastore/SettingsDataStore.kt
new file mode 100644
index 0000000..88fdb3e
--- /dev/null
+++ b/app/src/main/java/dev/spikeysanju/expensetracker/data/local/datastore/SettingsDataStore.kt
@@ -0,0 +1,42 @@
+package dev.spikeysanju.expensetracker.data.local.datastore
+
+import android.content.Context
+import androidx.datastore.preferences.core.booleanPreferencesKey
+import androidx.datastore.preferences.core.edit
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.map
+import javax.inject.Singleton
+
+
+class SettingsDataStore(context: Context) :
+    PrefsDataStore(
+        context,
+        PREF_FILE_SETTINGS
+    ),
+    SettingsImpl {
+
+    // used to get the data from datastore
+    override val biometric: Flow<Boolean>
+        get() = dataStore.data.map { preferences ->
+            val biometric = preferences[BIOMETRIC_KEY] ?: false
+            biometric
+        }
+
+    // used to save the bio-metric preference to datastore
+    override suspend fun saveToDataStore(isBiometricEnabled: Boolean) {
+        dataStore.edit { preferences ->
+            preferences[BIOMETRIC_KEY] = isBiometricEnabled
+        }
+    }
+
+    companion object {
+        private const val PREF_FILE_SETTINGS = "settings_preference"
+        private val BIOMETRIC_KEY = booleanPreferencesKey("biometric_mode")
+    }
+}
+
+@Singleton
+interface SettingsImpl {
+    val biometric: Flow<Boolean>
+    suspend fun saveToDataStore(isBiometricEnabled: Boolean)
+}
diff --git a/app/src/main/java/dev/spikeysanju/expensetracker/data/local/datastore/UIModeDataStore.kt b/app/src/main/java/dev/spikeysanju/expensetracker/data/local/datastore/UIModeDataStore.kt
index 33b1fe5..ba0f28b 100644
--- a/app/src/main/java/dev/spikeysanju/expensetracker/data/local/datastore/UIModeDataStore.kt
+++ b/app/src/main/java/dev/spikeysanju/expensetracker/data/local/datastore/UIModeDataStore.kt
@@ -1,18 +1,12 @@
 package dev.spikeysanju.expensetracker.data.local.datastore
 
 import android.content.Context
-import androidx.datastore.core.DataStore
-import androidx.datastore.preferences.core.Preferences
 import androidx.datastore.preferences.core.booleanPreferencesKey
 import androidx.datastore.preferences.core.edit
-import androidx.datastore.preferences.createDataStore
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.map
 import javax.inject.Singleton
 
-abstract class PrefsDataStore(context: Context, fileName: String) {
-    internal val dataStore: DataStore<Preferences> = context.createDataStore(fileName)
-}
 
 class UIModeDataStore(context: Context) :
     PrefsDataStore(
diff --git a/app/src/main/java/dev/spikeysanju/expensetracker/model/Transaction.kt b/app/src/main/java/dev/spikeysanju/expensetracker/model/Transaction.kt
index 51e824b..abed210 100644
--- a/app/src/main/java/dev/spikeysanju/expensetracker/model/Transaction.kt
+++ b/app/src/main/java/dev/spikeysanju/expensetracker/model/Transaction.kt
@@ -26,7 +26,7 @@ data class Transaction(
         System.currentTimeMillis(),
     @PrimaryKey(autoGenerate = true)
     @ColumnInfo(name = "id")
-    var id: Int = 0,
+    var id: Int = 0
 ) : Serializable {
     val createdAtDateFormat: String
         get() = DateFormat.getDateTimeInstance()
diff --git a/app/src/main/java/dev/spikeysanju/expensetracker/view/auth/AuthFragment.kt b/app/src/main/java/dev/spikeysanju/expensetracker/view/auth/AuthFragment.kt
new file mode 100644
index 0000000..fbad2be
--- /dev/null
+++ b/app/src/main/java/dev/spikeysanju/expensetracker/view/auth/AuthFragment.kt
@@ -0,0 +1,69 @@
+package dev.spikeysanju.expensetracker.view.auth
+
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.biometric.BiometricPrompt
+import androidx.core.content.ContextCompat
+import androidx.fragment.app.viewModels
+import androidx.lifecycle.lifecycleScope
+import androidx.navigation.fragment.findNavController
+import dagger.hilt.android.AndroidEntryPoint
+import dev.spikeysanju.expensetracker.R
+import dev.spikeysanju.expensetracker.databinding.FragmentAuthBinding
+import dev.spikeysanju.expensetracker.view.base.BaseFragment
+import kotlinx.coroutines.flow.first
+import kotlin.system.exitProcess
+
+@AndroidEntryPoint
+class AuthFragment : BaseFragment<FragmentAuthBinding, AuthViewModel>() {
+    override val viewModel: AuthViewModel by viewModels()
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+
+
+        lifecycleScope.launchWhenStarted {
+            if(viewModel.bioMetricPreference.first())
+                authenticate()
+        }
+    }
+
+    override fun getViewBinding(inflater: LayoutInflater, container: ViewGroup?) =
+        FragmentAuthBinding.inflate(inflater, container, false)
+
+
+    private fun authenticate(){
+        val executor = ContextCompat.getMainExecutor(requireContext())
+        val biometricPrompt = BiometricPrompt(this, executor,
+            object : BiometricPrompt.AuthenticationCallback() {
+                override fun onAuthenticationSucceeded(
+                    result: BiometricPrompt.AuthenticationResult) {
+                    super.onAuthenticationSucceeded(result)
+                    findNavController().navigate(R.id.action_authFragment_to_dashboardFragment)
+                }
+
+                override fun onAuthenticationFailed() {
+                    super.onAuthenticationFailed()
+                    //todo: show message wait for a second; static err code
+                    exitProcess(-1)
+                }
+
+                override fun onAuthenticationError(errorCode: Int,
+                                                   errString: CharSequence) {
+                    super.onAuthenticationError(errorCode, errString)
+                    //todo: show message wait for a second; static err code
+                    exitProcess(-2)
+                }
+            })
+
+        val promptInfo = BiometricPrompt.PromptInfo.Builder()
+            .setTitle("Please complete bio-metric login to use Expenso")
+            .setNegativeButtonText("Exit")
+            .build()
+        biometricPrompt.authenticate(promptInfo)
+    }
+
+}
diff --git a/app/src/main/java/dev/spikeysanju/expensetracker/view/auth/AuthViewModel.kt b/app/src/main/java/dev/spikeysanju/expensetracker/view/auth/AuthViewModel.kt
new file mode 100644
index 0000000..083742d
--- /dev/null
+++ b/app/src/main/java/dev/spikeysanju/expensetracker/view/auth/AuthViewModel.kt
@@ -0,0 +1,24 @@
+package dev.spikeysanju.expensetracker.view.auth
+
+
+import android.app.Application
+import androidx.lifecycle.AndroidViewModel
+import androidx.lifecycle.viewModelScope
+import dagger.hilt.android.lifecycle.HiltViewModel
+import dev.spikeysanju.expensetracker.data.local.datastore.SettingsDataStore
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import javax.inject.Inject
+
+@HiltViewModel
+class AuthViewModel @Inject constructor(
+    application: Application
+) :
+    AndroidViewModel(application) {
+
+    // init datastore
+    private val settingsDataStore = SettingsDataStore(application)
+
+    // get bio-metric preference
+    val bioMetricPreference = settingsDataStore.biometric
+}
diff --git a/app/src/main/java/dev/spikeysanju/expensetracker/view/dashboard/DashboardFragment.kt b/app/src/main/java/dev/spikeysanju/expensetracker/view/dashboard/DashboardFragment.kt
index bd91702..24c0324 100644
--- a/app/src/main/java/dev/spikeysanju/expensetracker/view/dashboard/DashboardFragment.kt
+++ b/app/src/main/java/dev/spikeysanju/expensetracker/view/dashboard/DashboardFragment.kt
@@ -95,7 +95,7 @@ class DashboardFragment :
             override fun onMove(
                 recyclerView: RecyclerView,
                 viewHolder: RecyclerView.ViewHolder,
-                target: RecyclerView.ViewHolder,
+                target: RecyclerView.ViewHolder
             ): Boolean {
                 return true
             }
@@ -280,6 +280,10 @@ class DashboardFragment :
                 findNavController().navigate(R.id.action_dashboardFragment_to_aboutFragment)
                 true
             }
+            R.id.action_settings -> {
+                findNavController().navigate(R.id.action_dashboardFragment_to_settingsFragment)
+                true
+            }
             else -> super.onOptionsItemSelected(item)
         }
     }
diff --git a/app/src/main/java/dev/spikeysanju/expensetracker/view/main/MainActivity.kt b/app/src/main/java/dev/spikeysanju/expensetracker/view/main/MainActivity.kt
index 842ed40..d639603 100644
--- a/app/src/main/java/dev/spikeysanju/expensetracker/view/main/MainActivity.kt
+++ b/app/src/main/java/dev/spikeysanju/expensetracker/view/main/MainActivity.kt
@@ -1,8 +1,12 @@
 package dev.spikeysanju.expensetracker.view.main
 
 import android.os.Bundle
+import android.widget.Toast
 import androidx.activity.viewModels
 import androidx.appcompat.app.AppCompatActivity
+import androidx.biometric.BiometricPrompt
+import androidx.core.content.ContextCompat
+import androidx.lifecycle.lifecycleScope
 import androidx.navigation.NavController
 import androidx.navigation.fragment.NavHostFragment
 import androidx.navigation.ui.AppBarConfiguration
@@ -14,6 +18,10 @@ import dev.spikeysanju.expensetracker.databinding.ActivityMainBinding
 import dev.spikeysanju.expensetracker.repo.TransactionRepo
 import dev.spikeysanju.expensetracker.utils.viewModelFactory
 import dev.spikeysanju.expensetracker.view.main.viewmodel.TransactionViewModel
+import dev.spikeysanju.expensetracker.view.settings.SettingsViewModel
+import kotlinx.coroutines.flow.first
+import java.util.concurrent.Executor
+import kotlin.system.exitProcess
 
 @AndroidEntryPoint
 class MainActivity : AppCompatActivity() {
@@ -79,4 +87,5 @@ class MainActivity : AppCompatActivity() {
         navHostFragment.navController.navigateUp()
         return super.onSupportNavigateUp()
     }
+
 }
diff --git a/app/src/main/java/dev/spikeysanju/expensetracker/view/settings/SettingsFragment.kt b/app/src/main/java/dev/spikeysanju/expensetracker/view/settings/SettingsFragment.kt
new file mode 100644
index 0000000..561b73c
--- /dev/null
+++ b/app/src/main/java/dev/spikeysanju/expensetracker/view/settings/SettingsFragment.kt
@@ -0,0 +1,38 @@
+package dev.spikeysanju.expensetracker.view.settings
+
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.fragment.app.viewModels
+import androidx.lifecycle.lifecycleScope
+import dagger.hilt.android.AndroidEntryPoint
+import dev.spikeysanju.expensetracker.databinding.FragmentSettingsBinding
+import dev.spikeysanju.expensetracker.view.base.BaseFragment
+import kotlinx.coroutines.flow.first
+
+@AndroidEntryPoint
+class SettingsFragment : BaseFragment<FragmentSettingsBinding, SettingsViewModel>() {
+    override val viewModel: SettingsViewModel by viewModels()
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+
+        // Set the item state
+        lifecycleScope.launchWhenStarted {
+            binding.biometric.isChecked = viewModel.bioMetricPreference.first()
+        }
+
+        initViews()
+    }
+
+    private fun initViews() = with(binding) {
+        biometric.setOnCheckedChangeListener { _, biometricEnabled ->
+            viewModel.setBioMetricLock(biometricEnabled)
+        }
+    }
+
+    override fun getViewBinding(inflater: LayoutInflater, container: ViewGroup?) =
+        FragmentSettingsBinding.inflate(inflater, container, false)
+}
diff --git a/app/src/main/java/dev/spikeysanju/expensetracker/view/settings/SettingsViewModel.kt b/app/src/main/java/dev/spikeysanju/expensetracker/view/settings/SettingsViewModel.kt
new file mode 100644
index 0000000..55d7c04
--- /dev/null
+++ b/app/src/main/java/dev/spikeysanju/expensetracker/view/settings/SettingsViewModel.kt
@@ -0,0 +1,31 @@
+package dev.spikeysanju.expensetracker.view.settings
+
+
+import android.app.Application
+import androidx.lifecycle.AndroidViewModel
+import androidx.lifecycle.viewModelScope
+import dagger.hilt.android.lifecycle.HiltViewModel
+import dev.spikeysanju.expensetracker.data.local.datastore.SettingsDataStore
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import javax.inject.Inject
+
+@HiltViewModel
+class SettingsViewModel @Inject constructor(
+    application: Application
+) :
+    AndroidViewModel(application) {
+
+    // init datastore
+    private val settingsDataStore = SettingsDataStore(application)
+
+    // get bio-metric preference
+    val bioMetricPreference = settingsDataStore.biometric
+
+    fun setBioMetricLock(bioMetricLock: Boolean) {
+        viewModelScope.launch(Dispatchers.IO) {
+            settingsDataStore.saveToDataStore(bioMetricLock)
+        }
+    }
+
+}
diff --git a/app/src/main/res/layout/fragment_auth.xml b/app/src/main/res/layout/fragment_auth.xml
new file mode 100644
index 0000000..8e206f5
--- /dev/null
+++ b/app/src/main/res/layout/fragment_auth.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:fillViewport="true"
+    android:scrollbars="none">
+
+
+    <androidx.constraintlayout.widget.ConstraintLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        tools:context=".view.auth.AuthFragment">
+
+        <ImageView
+            android:id="@+id/logo"
+            android:layout_width="140dp"
+            android:layout_height="140dp"
+            android:layout_marginTop="@dimen/dimen_64"
+            android:contentDescription="@string/app_name"
+            android:src="@drawable/ic_logo"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent" />
+
+    </androidx.constraintlayout.widget.ConstraintLayout>
+
+</ScrollView>
diff --git a/app/src/main/res/layout/fragment_settings.xml b/app/src/main/res/layout/fragment_settings.xml
new file mode 100644
index 0000000..6aa1733
--- /dev/null
+++ b/app/src/main/res/layout/fragment_settings.xml
@@ -0,0 +1,59 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:fillViewport="true"
+    android:scrollbars="none">
+
+
+    <androidx.constraintlayout.widget.ConstraintLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        tools:context=".view.settings.SettingsFragment">
+
+        <ImageView
+            android:id="@+id/logo"
+            android:layout_width="140dp"
+            android:layout_height="140dp"
+            android:layout_marginTop="@dimen/dimen_64"
+            android:contentDescription="@string/app_name"
+            android:src="@drawable/ic_logo"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent" />
+
+        <LinearLayout
+            android:layout_marginStart="@dimen/dimen_16"
+            android:layout_marginTop="@dimen/dimen_48"
+            app:layout_constraintTop_toBottomOf="@id/logo"
+            android:orientation="horizontal"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content">
+
+            <TextView
+                android:id="@+id/biometricTitle"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:fontFamily="@font/open_sans_bold"
+                android:text="@string/text_settings_biometric"
+                android:textAppearance="@style/TextAppearance.MaterialComponents.Overline"
+                app:layout_constraintStart_toStartOf="parent"/>
+
+
+            <androidx.appcompat.widget.SwitchCompat
+                android:layout_weight="1"
+                android:id="@+id/biometric"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                app:layout_constraintStart_toStartOf="parent"
+                app:layout_constraintTop_toBottomOf="@id/biometricTitle" />
+
+        </LinearLayout>
+
+
+
+    </androidx.constraintlayout.widget.ConstraintLayout>
+
+</ScrollView>
diff --git a/app/src/main/res/menu/menu_ui.xml b/app/src/main/res/menu/menu_ui.xml
index 21b79d4..542cbb7 100644
--- a/app/src/main/res/menu/menu_ui.xml
+++ b/app/src/main/res/menu/menu_ui.xml
@@ -20,5 +20,10 @@
         android:enabled="true"
         android:title="@string/text_about"
         app:showAsAction="never" />
+    <item
+        android:id="@+id/action_settings"
+        android:enabled="true"
+        android:title="@string/text_settings"
+        app:showAsAction="never" />
 
 </menu>
diff --git a/app/src/main/res/navigation/nav_graph.xml b/app/src/main/res/navigation/nav_graph.xml
index 6926ae6..8b6945b 100644
--- a/app/src/main/res/navigation/nav_graph.xml
+++ b/app/src/main/res/navigation/nav_graph.xml
@@ -1,94 +1,121 @@
-<?xml version="1.0" encoding="utf-8"?>
-<navigation xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
-    xmlns:tools="http://schemas.android.com/tools"
-    android:id="@+id/nav_graph"
-    app:startDestination="@id/dashboardFragment">
-
-    <fragment
-        android:id="@+id/dashboardFragment"
-        android:name="dev.spikeysanju.expensetracker.view.dashboard.DashboardFragment"
-        android:label="fragment_dashboard"
-        tools:layout="@layout/fragment_dashboard">
-        <action
-            android:id="@+id/action_dashboardFragment_to_addTransactionFragment"
-            app:destination="@id/addTransactionFragment"
-            app:enterAnim="@anim/slide_in_right"
-            app:exitAnim="@anim/slide_out_left"
-            app:popEnterAnim="@anim/slide_in_left"
-            app:popExitAnim="@anim/slide_out_right" />
-        <action
-            android:id="@+id/action_dashboardFragment_to_transactionDetailsFragment"
-            app:destination="@id/transactionDetailsFragment"
-            app:enterAnim="@anim/slide_in_right"
-            app:exitAnim="@anim/slide_out_left"
-            app:popEnterAnim="@anim/slide_in_left"
-            app:popExitAnim="@anim/slide_out_right" />
-        <action
-            android:id="@+id/action_dashboardFragment_to_aboutFragment"
-            app:destination="@id/aboutFragment"
-            app:enterAnim="@anim/slide_in_right"
-            app:exitAnim="@anim/slide_out_left"
-            app:popEnterAnim="@anim/slide_in_left"
-            app:popExitAnim="@anim/slide_out_right" />
-    </fragment>
-    <fragment
-        android:id="@+id/addTransactionFragment"
-        android:name="dev.spikeysanju.expensetracker.view.add.AddTransactionFragment"
-        android:label="fragment_add_transaction"
-        tools:layout="@layout/fragment_add_transaction">
-        <action
-            android:id="@+id/action_addTransactionFragment_to_dashboardFragment"
-            app:destination="@id/dashboardFragment"
-            app:popUpTo="@id/addTransactionFragment"
-            app:popUpToInclusive="true" />
-    </fragment>
-    <fragment
-        android:id="@+id/transactionDetailsFragment"
-        android:name="dev.spikeysanju.expensetracker.view.details.TransactionDetailsFragment"
-        android:label="Details"
-        tools:layout="@layout/fragment_transaction_details">
-        <argument
-            android:name="transaction"
-            app:argType="dev.spikeysanju.expensetracker.model.Transaction" />
-        <action
-            android:id="@+id/action_transactionDetailsFragment_to_editTransactionFragment"
-            app:destination="@id/editTransactionFragment"
-            app:enterAnim="@anim/slide_in_right"
-            app:exitAnim="@anim/slide_out_left"
-            app:popEnterAnim="@anim/slide_in_left"
-            app:popExitAnim="@anim/slide_out_right" />
-        <action
-            android:id="@+id/action_transactionDetailsFragment_to_errorDialog"
-            app:destination="@id/errorDialog" />
-    </fragment>
-    <fragment
-        android:id="@+id/editTransactionFragment"
-        android:name="dev.spikeysanju.expensetracker.view.edit.EditTransactionFragment"
-        android:label="Edit Transaction"
-        tools:layout="@layout/fragment_edit_transaction">
-        <argument
-            android:name="transaction"
-            app:argType="dev.spikeysanju.expensetracker.model.Transaction" />
-        <action
-            android:id="@+id/edit_to_details"
-            app:destination="@id/transactionDetailsFragment" />
-    </fragment>
-    <fragment
-        android:id="@+id/aboutFragment"
-        android:name="dev.spikeysanju.expensetracker.view.about.AboutFragment"
-        android:label="About"
-        tools:layout="@layout/fragment_about" />
-    <dialog
-        android:id="@+id/errorDialog"
-        android:name="dev.spikeysanju.expensetracker.view.dialog.ErrorDialog"
-        android:label="ErrorDialog"
-        tools:layout="@layout/error_dialog_layout">
-        <argument
-            android:name="title"
-            app:argType="string" />
-        <argument
-            android:name="message"
-            app:argType="string" />
-    </dialog>
-</navigation>
+<?xml version="1.0" encoding="utf-8"?>
+<navigation xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/nav_graph"
+    app:startDestination="@id/authFragment">
+
+    <fragment
+        android:id="@+id/dashboardFragment"
+        android:name="dev.spikeysanju.expensetracker.view.dashboard.DashboardFragment"
+        android:label="fragment_dashboard"
+        tools:layout="@layout/fragment_dashboard">
+        <action
+            android:id="@+id/action_dashboardFragment_to_addTransactionFragment"
+            app:destination="@id/addTransactionFragment"
+            app:enterAnim="@anim/slide_in_right"
+            app:exitAnim="@anim/slide_out_left"
+            app:popEnterAnim="@anim/slide_in_left"
+            app:popExitAnim="@anim/slide_out_right" />
+        <action
+            android:id="@+id/action_dashboardFragment_to_transactionDetailsFragment"
+            app:destination="@id/transactionDetailsFragment"
+            app:enterAnim="@anim/slide_in_right"
+            app:exitAnim="@anim/slide_out_left"
+            app:popEnterAnim="@anim/slide_in_left"
+            app:popExitAnim="@anim/slide_out_right" />
+        <action
+            android:id="@+id/action_dashboardFragment_to_aboutFragment"
+            app:destination="@id/aboutFragment"
+            app:enterAnim="@anim/slide_in_right"
+            app:exitAnim="@anim/slide_out_left"
+            app:popEnterAnim="@anim/slide_in_left"
+            app:popExitAnim="@anim/slide_out_right" />
+        <action
+            android:id="@+id/action_dashboardFragment_to_settingsFragment"
+            app:destination="@id/settingsFragment"
+            app:enterAnim="@anim/slide_in_right"
+            app:exitAnim="@anim/slide_out_left"
+            app:popEnterAnim="@anim/slide_in_left"
+            app:popExitAnim="@anim/slide_out_right" />
+    </fragment>
+    <fragment
+        android:id="@+id/addTransactionFragment"
+        android:name="dev.spikeysanju.expensetracker.view.add.AddTransactionFragment"
+        android:label="fragment_add_transaction"
+        tools:layout="@layout/fragment_add_transaction">
+        <action
+            android:id="@+id/action_addTransactionFragment_to_dashboardFragment"
+            app:destination="@id/dashboardFragment"
+            app:popUpTo="@id/addTransactionFragment"
+            app:popUpToInclusive="true" />
+    </fragment>
+    <fragment
+        android:id="@+id/transactionDetailsFragment"
+        android:name="dev.spikeysanju.expensetracker.view.details.TransactionDetailsFragment"
+        android:label="Details"
+        tools:layout="@layout/fragment_transaction_details">
+        <argument
+            android:name="transaction"
+            app:argType="dev.spikeysanju.expensetracker.model.Transaction" />
+        <action
+            android:id="@+id/action_transactionDetailsFragment_to_editTransactionFragment"
+            app:destination="@id/editTransactionFragment"
+            app:enterAnim="@anim/slide_in_right"
+            app:exitAnim="@anim/slide_out_left"
+            app:popEnterAnim="@anim/slide_in_left"
+            app:popExitAnim="@anim/slide_out_right" />
+        <action
+            android:id="@+id/action_transactionDetailsFragment_to_errorDialog"
+            app:destination="@id/errorDialog" />
+    </fragment>
+    <fragment
+        android:id="@+id/editTransactionFragment"
+        android:name="dev.spikeysanju.expensetracker.view.edit.EditTransactionFragment"
+        android:label="Edit Transaction"
+        tools:layout="@layout/fragment_edit_transaction">
+        <argument
+            android:name="transaction"
+            app:argType="dev.spikeysanju.expensetracker.model.Transaction" />
+        <action
+            android:id="@+id/edit_to_details"
+            app:destination="@id/transactionDetailsFragment" />
+    </fragment>
+    <fragment
+        android:id="@+id/aboutFragment"
+        android:name="dev.spikeysanju.expensetracker.view.about.AboutFragment"
+        android:label="About"
+        tools:layout="@layout/fragment_about" />
+    <fragment
+        android:id="@+id/settingsFragment"
+        android:name="dev.spikeysanju.expensetracker.view.settings.SettingsFragment"
+        android:label="Settings"
+        tools:layout="@layout/fragment_settings" />
+
+    <fragment
+        android:id="@+id/authFragment"
+        android:name="dev.spikeysanju.expensetracker.view.auth.AuthFragment"
+        android:label="Authentication"
+        tools:layout="@layout/fragment_auth" >
+        <action
+            android:id="@+id/action_authFragment_to_dashboardFragment"
+            app:destination="@id/dashboardFragment"
+            app:enterAnim="@anim/slide_in_right"
+            app:popEnterAnim="@anim/slide_in_left"
+            app:launchSingleTop="true"
+            app:popUpTo="@+id/nav_graph"
+            app:popUpToInclusive="true" />
+    </fragment>
+    <dialog
+        android:id="@+id/errorDialog"
+        android:name="dev.spikeysanju.expensetracker.view.dialog.ErrorDialog"
+        android:label="ErrorDialog"
+        tools:layout="@layout/error_dialog_layout">
+        <argument
+            android:name="title"
+            app:argType="string" />
+        <argument
+            android:name="message"
+            app:argType="string" />
+    </dialog>
+</navigation>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 7725c30..3163ab0 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -37,5 +37,7 @@
     <string name="share_message">\%s \nAmount: %s, \nTransaction-Type: %s, \nTag: %s, \nDate: %s, \nNote: %s, \nCreatedAt: %s \n\nVisit: https://github.com/Spikeysanju/Expenso</string>
     <string name="text_transaction_empty_title">No Transaction Yet!</string>
     <string name="text_transaction_empty_desc">After your first transaction you will be able to view it here</string>
+    <string name="text_settings">Settings</string>
+    <string name="text_settings_biometric">Bio-metric Security</string>
 
 </resources>
diff --git a/build.gradle b/build.gradle
index b64ea26..bcee468 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,12 +1,12 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 buildscript {
-    ext.kotlin_version = "1.4.21"
+    ext.kotlin_version = "1.3.72"
     repositories {
         google()
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:4.2.0-beta04'
+        classpath "com.android.tools.build:gradle:4.1.2"
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
         classpath "androidx.navigation:navigation-safe-args-gradle-plugin:2.3.3"
         classpath 'com.google.dagger:hilt-android-gradle-plugin:2.30.1-alpha'
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index ae8dbe4..104492c 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https://services.gradle.org/distributions/gradle-6.7.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.5-bin.zip