diff --git a/html/export.html b/html/export.html
index 0f7821d..9e3dc00 100644
--- a/html/export.html
+++ b/html/export.html
@@ -24,7 +24,7 @@
             <a href="#" class="border-indigo-500 text-gray-900 inline-flex items-center px-1 pt-1 border-b-2 text-sm font-medium">
               Import & Export
             </a>
-            <a href="login.html" class="border-transparent text-gray-500 hover:border-gray-300 hover:text-gray-700 inline-flex items-center px-1 pt-1 border-b-2 text-sm font-medium">
+            <a href="javascript:logout()" class="border-transparent text-gray-500 hover:border-gray-300 hover:text-gray-700 inline-flex items-center px-1 pt-1 border-b-2 text-sm font-medium">
               Sign out
             </a>
           </div>
@@ -47,7 +47,7 @@
       <div id="mobile-menu" class="hidden pt-2 pb-3 space-y-1">
         <a href="passwords.html" class="border-transparent text-gray-600 hover:bg-gray-50 hover:border-gray-300 hover:text-gray-800 block pl-3 pr-4 py-2 border-l-4 text-base font-medium">Passwords</a>
         <a href="#" class="bg-indigo-50 border-indigo-500 text-indigo-700 block pl-3 pr-4 py-2 border-l-4 text-base font-medium">Import & Export</a>
-        <a href="login.html" class="border-transparent text-gray-600 hover:bg-gray-50 hover:border-gray-300 hover:text-gray-800 block pl-3 pr-4 py-2 border-l-4 text-base font-medium">Sign out</a>
+        <a href="javascript:logout()" class="border-transparent text-gray-600 hover:bg-gray-50 hover:border-gray-300 hover:text-gray-800 block pl-3 pr-4 py-2 border-l-4 text-base font-medium">Sign out</a>
       </div>
     </div>
   </nav>
diff --git a/html/passwords.html b/html/passwords.html
index a3f6ac3..5a11408 100644
--- a/html/passwords.html
+++ b/html/passwords.html
@@ -25,7 +25,7 @@
             <a href="export.html" class="border-transparent text-gray-500 hover:border-gray-300 hover:text-gray-700 inline-flex items-center px-1 pt-1 border-b-2 text-sm font-medium">
               Import & Export
             </a>
-            <a href="login.html" class="border-transparent text-gray-500 hover:border-gray-300 hover:text-gray-700 inline-flex items-center px-1 pt-1 border-b-2 text-sm font-medium">
+            <a href="javascript:logout()" class="border-transparent text-gray-500 hover:border-gray-300 hover:text-gray-700 inline-flex items-center px-1 pt-1 border-b-2 text-sm font-medium">
               Sign out
             </a>
           </div>
@@ -56,7 +56,7 @@
       <div id="mobile-menu" class="hidden pt-2 pb-3 space-y-1">
         <a href="#" class="bg-indigo-50 border-indigo-500 text-indigo-700 block pl-3 pr-4 py-2 border-l-4 text-base font-medium">Passwords</a>
         <a href="export.html" class="border-transparent text-gray-600 hover:bg-gray-50 hover:border-gray-300 hover:text-gray-800 block pl-3 pr-4 py-2 border-l-4 text-base font-medium">Import & Export</a>
-        <a href="login.html" class="border-transparent text-gray-600 hover:bg-gray-50 hover:border-gray-300 hover:text-gray-800 block pl-3 pr-4 py-2 border-l-4 text-base font-medium">Sign out</a>
+        <a href="javascript:logout()" class="border-transparent text-gray-600 hover:bg-gray-50 hover:border-gray-300 hover:text-gray-800 block pl-3 pr-4 py-2 border-l-4 text-base font-medium">Sign out</a>
       </div>
     </div>
   </nav>
diff --git a/js/default-functions.js b/js/default-functions.js
index 575c272..b77dee5 100644
--- a/js/default-functions.js
+++ b/js/default-functions.js
@@ -106,4 +106,11 @@ function getDate(date) {
     let local = new Date(date);
     local.setMinutes(date.getMinutes() - date.getTimezoneOffset());
     return local.toJSON().slice(0, 10);
+}
+
+function logout(){
+    sessionStorage.url = null;
+    sessionStorage.username = null;
+    sessionStorage.password = null;
+    window.location.href = 'login.html';
 }
\ No newline at end of file
diff --git a/js/export.js b/js/export.js
index cf5aa16..96b9cac 100644
--- a/js/export.js
+++ b/js/export.js
@@ -1,3 +1,7 @@
+if(sessionStorage.url == null && typeof(sessionStorage.url) == 'undefined') window.location.href = 'login.html';
+if(sessionStorage.username == null && typeof(sessionStorage.username) == 'undefined') window.location.href = 'login.html';
+if(sessionStorage.password == null && typeof(sessionStorage.password) == 'undefined') window.location.href = 'login.html';
+
 function backup_passky(){
 
     if(sessionStorage.passwords == null || typeof(sessionStorage.passwords) == 'undefined'){
diff --git a/js/prepasswords.js b/js/prepasswords.js
index 072a256..140bd05 100644
--- a/js/prepasswords.js
+++ b/js/prepasswords.js
@@ -1,3 +1,7 @@
+if(sessionStorage.url == null && typeof(sessionStorage.url) == 'undefined') window.location.href = 'login.html';
+if(sessionStorage.username == null && typeof(sessionStorage.username) == 'undefined') window.location.href = 'login.html';
+if(sessionStorage.password == null && typeof(sessionStorage.password) == 'undefined') window.location.href = 'login.html';
+
 function displayPassword(id, website, username, password){
     const decrypted_password = CryptoJS.AES.decrypt(password, sessionStorage.password).toString(CryptoJS.enc.Utf8);
     const data = id + " " + website + " " + username + " " + decrypted_password;