diff --git a/app/build.gradle b/app/build.gradle
index e3d5575..1182772 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -48,8 +48,8 @@ dependencies {
     implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.5.1'
     implementation 'androidx.appcompat:appcompat:1.6.1'
     implementation 'com.google.android.material:material:1.8.0'
-    implementation 'com.google.code.gson:gson:2.9.0'
+    implementation 'com.google.code.gson:gson:2.10.1'
 
-//    implementation project(':libDriveBackup')
-    implementation 'com.github.fcat97:driveBackupApi:1.0.4'
+    implementation project(':libDriveBackup')
+//    implementation 'com.github.fcat97:driveBackupApi:1.0.5'
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/tos/drivebackup/MainActivity.kt b/app/src/main/java/com/tos/drivebackup/MainActivity.kt
index 2f76462..017682c 100644
--- a/app/src/main/java/com/tos/drivebackup/MainActivity.kt
+++ b/app/src/main/java/com/tos/drivebackup/MainActivity.kt
@@ -36,6 +36,7 @@ class MainActivity : ComponentActivity() {
     private lateinit var terminal: TextView
     private lateinit var emailTextView: TextView
     private lateinit var signOutButton: Button
+    private lateinit var signInButton: Button
 
     private val googleDriveBackupManager = GoogleDriveBackupManager(
         appID = BuildConfig.APPLICATION_ID,
@@ -69,6 +70,7 @@ class MainActivity : ComponentActivity() {
         terminal = findViewById(R.id.terminal)
         emailTextView = findViewById(R.id.emailTextView)
         signOutButton = findViewById(R.id.signOutButton)
+        signInButton = findViewById(R.id.signInButton)
 
         createDemoBackupButton.setOnClickListener { createDemoBackup() }
         downloadDemoBackupButton.setOnClickListener { downloadDemoBackup() }
@@ -90,6 +92,7 @@ class MainActivity : ComponentActivity() {
                 fetchFiles()
             }
         }
+        signInButton.setOnClickListener { singIn() }
         signOutButton.setOnClickListener { signOut() }
         clearTerminalButton.setOnClickListener { terminalOutputLiveData.value = "" }
 
@@ -156,6 +159,15 @@ class MainActivity : ComponentActivity() {
         )
     }
 
+    private fun singIn() {
+        googleDriveBackupManager.signIn(
+            onFailed = null,
+            onSuccess = {
+                printToTerminal(it.toString())
+            }
+        )
+    }
+
     private fun signOut() {
         googleDriveBackupManager.signOut(
             onFailed = {
diff --git a/app/src/main/res/layout/main_activity.xml b/app/src/main/res/layout/main_activity.xml
index 55556fa..a72df5d 100644
--- a/app/src/main/res/layout/main_activity.xml
+++ b/app/src/main/res/layout/main_activity.xml
@@ -120,6 +120,14 @@
                 android:layout_gravity="center_horizontal"
                 tools:text="Example\nexample@gmail.com"/>
 
+            <com.google.android.material.button.MaterialButton
+                android:id="@+id/signInButton"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="Sign Out"
+                android:layout_marginVertical="8dp"
+                style="@style/ThemeOverlay.Material3.Button.ElevatedButton"/>
+
             <com.google.android.material.button.MaterialButton
                 android:id="@+id/signOutButton"
                 android:layout_width="wrap_content"
diff --git a/libDriveBackup/build.gradle b/libDriveBackup/build.gradle
index 974679b..2f421d6 100644
--- a/libDriveBackup/build.gradle
+++ b/libDriveBackup/build.gradle
@@ -50,7 +50,7 @@ afterEvaluate {
         publications {
             maven(MavenPublication) {
                 group = 'media.uqab.driveBackupApi'
-                version = '1.0.4'
+                version = '1.0.5'
                 artifactId = "driveBackupApi"
                 from components.release
 
diff --git a/libDriveBackup/src/main/java/media/uqab/libdrivebackup/GoogleDriveBackupManager.kt b/libDriveBackup/src/main/java/media/uqab/libdrivebackup/GoogleDriveBackupManager.kt
index 59b6d32..5cacbdc 100644
--- a/libDriveBackup/src/main/java/media/uqab/libdrivebackup/GoogleDriveBackupManager.kt
+++ b/libDriveBackup/src/main/java/media/uqab/libdrivebackup/GoogleDriveBackupManager.kt
@@ -294,6 +294,15 @@ class GoogleDriveBackupManager(
         }
     }
 
+    fun signIn(
+        onFailed: ((Exception) -> Unit)?,
+        onSuccess: (UserInfo) -> Unit
+    ) = requestConsentAndProceed(onFailed) {
+        val info = GetSignedInEmail.getSignedInEmail(activity)
+        if (info != null) onSuccess(info)
+        else onFailed?.invoke(Exception(""))
+    }
+
     /**
      * Request for User Consent to grant access to his/her drive account.
      *