diff --git a/.gitignore b/.gitignore
index cd7aa82..6a6350a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 /vendor/
 /logs/*
+/tmp/
diff --git a/public/index.php b/public/index.php
index 49d2a47..dd821e3 100644
--- a/public/index.php
+++ b/public/index.php
@@ -12,8 +12,13 @@
  *  Jelmer Hinssen
  */
 
- // Create session
- session_start();
+/**
+ * Session fix for development
+ */
+
+if (session_save_path() === "") {
+    ini_set('session.save_path', realpath(__DIR__ . '/../tmp'));
+}
 
 /**
  * Check if the script is running in CLI mode
diff --git a/src/Application/Auth/Authorization.php b/src/Application/Auth/Authorization.php
index 34b36d0..2c979fc 100644
--- a/src/Application/Auth/Authorization.php
+++ b/src/Application/Auth/Authorization.php
@@ -33,17 +33,22 @@ class Authorization
         $klantnr = $rekeningen[$id]['klantid'];
 
         $klant = $db->klanten->where('id', $klantnr)[$klantnr];
-        if ($klant['code'] === $passcode) {
-            $_SESSION['user'] = $klant;
 
+        if ($klant['code'] === $passcode) {
+            $_SESSION['userid'] = $klant['id'];
             return true;
         }
 
         return false;
     }
 
-    public function getUser()
+    public function getUserID()
+    {
+        return $_SESSION['userid'];
+    }
+
+    public function isUserAuthenticated()
     {
-        return $_SESSION['user'];
+        return $this->getUserID() !== null;
     }
 }
diff --git a/src/bootstrap.php b/src/bootstrap.php
index ae25891..fee2e5a 100644
--- a/src/bootstrap.php
+++ b/src/bootstrap.php
@@ -16,6 +16,8 @@
  * BOOTSTRAPPING SCRIPT
  */
 
+session_start();
+
 // Get the Slim framework settings
 $settings = require __DIR__ . '/settings.php';