diff --git a/database/migrations/structure/20200613_1549_sessions.sql b/database/migrations/structure/20200613_1549_sessions.sql
new file mode 100644
index 0000000..e568b0f
--- /dev/null
+++ b/database/migrations/structure/20200613_1549_sessions.sql
@@ -0,0 +1,6 @@
+CREATE TABLE `sessions` (
+  `id` varchar(64) NOT NULL,
+  `data` text NOT NULL,
+  `updated` timestamp NOT NULL,
+  PRIMARY KEY (`id`)
+) ENGINE = InnoDB DEFAULT CHARSET = utf8mb4;
diff --git a/main.php b/main.php
index 301c0e5..aeab442 100644
--- a/main.php
+++ b/main.php
@@ -10,21 +10,11 @@ const REVISION_DATE = '';
 $dotenv = Dotenv\Dotenv::createImmutable(ROOT);
 $dotenv->load();
 
-if (!empty($_ENV['DEV'])) {
-    error_reporting(E_ALL);
-
-    ini_set('display_errors', '1');
-} else {
-    ini_set('display_errors', '0');
-}
-
 class Container
 {
     static MapGuesser\Interfaces\Database\IConnection $dbConnection;
     static MapGuesser\Routing\RouteCollection $routeCollection;
+    static \SessionHandlerInterface $sessionHandler;
 }
 
 Container::$dbConnection = new MapGuesser\Database\Mysql\Connection($_ENV['DB_HOST'], $_ENV['DB_USER'], $_ENV['DB_PASSWORD'], $_ENV['DB_NAME']);
-Container::$routeCollection = new MapGuesser\Routing\RouteCollection();
-
-session_start();
diff --git a/public/index.php b/public/index.php
index 7f8b3d1..ed4e391 100644
--- a/public/index.php
+++ b/public/index.php
@@ -1,8 +1,7 @@
 <?php
 
-require '../main.php';
+require '../web.php';
 
-// very basic routing
 $host = $_SERVER['REQUEST_SCHEME'] . '://' . $_SERVER['HTTP_HOST'];
 $method = strtolower($_SERVER['REQUEST_METHOD']);
 $url = substr($_SERVER['REQUEST_URI'], strlen('/'));
@@ -11,23 +10,6 @@ if (($pos = strpos($url, '?')) !== false) {
 }
 $url = rawurldecode($url);
 
-Container::$routeCollection->get('index', '', [MapGuesser\Controller\HomeController::class, 'getIndex']);
-Container::$routeCollection->get('login', 'login', [MapGuesser\Controller\LoginController::class, 'getLoginForm']);
-Container::$routeCollection->post('login-action', 'login', [MapGuesser\Controller\LoginController::class, 'login']);
-Container::$routeCollection->get('logout', 'logout', [MapGuesser\Controller\LoginController::class, 'logout']);
-Container::$routeCollection->get('maps', 'maps', [MapGuesser\Controller\MapsController::class, 'getMaps']);
-Container::$routeCollection->group('game', function (MapGuesser\Routing\RouteCollection $routeCollection) {
-    $routeCollection->get('game', '{mapId}', [MapGuesser\Controller\GameController::class, 'getGame']);
-    $routeCollection->get('game-json', '{mapId}/json', [MapGuesser\Controller\GameController::class, 'getGameJson']);
-    $routeCollection->get('newPlace-json', '{mapId}/newPlace.json', [MapGuesser\Controller\GameFlowController::class, 'getNewPlace']);
-    $routeCollection->post('guess-json', '{mapId}/guess.json', [MapGuesser\Controller\GameFlowController::class, 'evaluateGuess']);
-});
-Container::$routeCollection->group('admin', function (MapGuesser\Routing\RouteCollection $routeCollection) {
-    $routeCollection->get('admin.mapEditor', 'mapEditor/{mapId?}', [MapGuesser\Controller\MapAdminController::class, 'getMapEditor']);
-    $routeCollection->get('admin.place', 'place.json/{placeId}', [MapGuesser\Controller\MapAdminController::class, 'getPlace']);
-    $routeCollection->post('admin.saveMap', 'saveMap/{mapId}/json', [MapGuesser\Controller\MapAdminController::class, 'saveMap']);
-});
-
 $match = Container::$routeCollection->match($method, explode('/', $url));
 
 if ($match !== null) {
diff --git a/src/Database/Query/Modify.php b/src/Database/Query/Modify.php
index 6c84496..f731461 100755
--- a/src/Database/Query/Modify.php
+++ b/src/Database/Query/Modify.php
@@ -16,6 +16,8 @@ class Modify
 
     private array $original = [];
 
+    private ?string $externalId = null;
+
     private bool $autoIncrement = true;
 
     public function __construct(IConnection $connection, string $table)
@@ -31,6 +33,13 @@ class Modify
         return $this;
     }
 
+    public function setExternalId($id): Modify
+    {
+        $this->externalId = $id;
+
+        return $this;
+    }
+
     public function setAutoIncrement(bool $autoIncrement = true): Modify
     {
         $this->autoIncrement = $autoIncrement;
@@ -87,7 +96,9 @@ class Modify
 
     private function insert(): void
     {
-        if (!$this->autoIncrement) {
+        if ($this->externalId !== null) {
+            $this->attributes[$this->idName] = $this->externalId;
+        } elseif (!$this->autoIncrement) {
             $this->attributes[$this->idName] = $this->generateKey();
         }
 
diff --git a/src/Session/DatabaseSessionHandler.php b/src/Session/DatabaseSessionHandler.php
new file mode 100644
index 0000000..a50a668
--- /dev/null
+++ b/src/Session/DatabaseSessionHandler.php
@@ -0,0 +1,113 @@
+<?php namespace MapGuesser\Session;
+
+use DateTime;
+use MapGuesser\Database\Query\Modify;
+use MapGuesser\Database\Query\Select;
+use MapGuesser\Interfaces\Database\IResultSet;
+use SessionHandlerInterface;
+use SessionIdInterface;
+use SessionUpdateTimestampHandlerInterface;
+
+class DatabaseSessionHandler implements SessionHandlerInterface, SessionIdInterface, SessionUpdateTimestampHandlerInterface
+{
+    private bool $exists = false;
+
+    private bool $written = false;
+
+    public function open($savePath, $sessionName): bool
+    {
+        return true;
+    }
+
+    public function close(): bool
+    {
+        return true;
+    }
+
+    public function read($id): string
+    {
+        $select = new Select(\Container::$dbConnection, 'sessions');
+        $select->columns(['data']);
+        $select->whereId($id);
+
+        $result = $select->execute()->fetch(IResultSet::FETCH_ASSOC);
+
+        if ($result === null) {
+            return '';
+        }
+
+        $this->exists = true;
+
+        return $result['data'];
+    }
+
+    public function write($id, $data): bool
+    {
+        $modify = new Modify(\Container::$dbConnection, 'sessions');
+
+        if ($this->exists) {
+            $modify->setId($id);
+        } else {
+            $modify->setExternalId($id);
+        }
+
+        $modify->set('data', $data);
+        $modify->set('updated', (new DateTime())->format('Y-m-d H:i:s'));
+        $modify->save();
+
+        $written = true;
+
+        return true;
+    }
+
+    public function destroy($id): bool
+    {
+        $modify = new Modify(\Container::$dbConnection, 'sessions');
+        $modify->setId($id);
+        $modify->delete();
+
+        return true;
+    }
+
+    public function gc($maxlifetime): int
+    {
+        $select = new Select(\Container::$dbConnection, 'sessions');
+        $select->columns(['id']);
+        $select->where('updated', '<', (new DateTime('-' . $maxlifetime . ' seconds'))->format('Y-m-d H:i:s'));
+
+        $result = $select->execute();
+
+        while ($session = $result->fetch(IResultSet::FETCH_ASSOC)) {
+            $modify = new Modify(\Container::$dbConnection, 'sessions');
+            $modify->setId($session['id']);
+            $modify->delete();
+        }
+
+        return true;
+    }
+
+    public function create_sid(): string
+    {
+        return hash('sha256', random_bytes(10) . microtime());
+    }
+
+    public function validateId($id): bool
+    {
+        return preg_match('/^[a-f0-9]{64}$/', $id);
+    }
+
+    public function updateTimestamp($id, $data): bool
+    {
+        if ($this->written) {
+            return true;
+        }
+
+        $modify = new Modify(\Container::$dbConnection, 'sessions');
+
+        $modify->setId($id);
+        $modify->set('updated', (new DateTime())->format('Y-m-d H:i:s'));
+        $modify->save();
+
+        return true;
+    }
+}
diff --git a/web.php b/web.php
new file mode 100644
index 0000000..34eb015
--- /dev/null
+++ b/web.php
@@ -0,0 +1,40 @@
+<?php
+
+require 'main.php';
+
+if (!empty($_ENV['DEV'])) {
+    error_reporting(E_ALL);
+
+    ini_set('display_errors', '1');
+} else {
+    ini_set('display_errors', '0');
+}
+
+Container::$routeCollection = new MapGuesser\Routing\RouteCollection();
+
+Container::$routeCollection->get('index', '', [MapGuesser\Controller\HomeController::class, 'getIndex']);
+Container::$routeCollection->get('login', 'login', [MapGuesser\Controller\LoginController::class, 'getLoginForm']);
+Container::$routeCollection->post('login-action', 'login', [MapGuesser\Controller\LoginController::class, 'login']);
+Container::$routeCollection->get('logout', 'logout', [MapGuesser\Controller\LoginController::class, 'logout']);
+Container::$routeCollection->get('maps', 'maps', [MapGuesser\Controller\MapsController::class, 'getMaps']);
+Container::$routeCollection->group('game', function (MapGuesser\Routing\RouteCollection $routeCollection) {
+    $routeCollection->get('game', '{mapId}', [MapGuesser\Controller\GameController::class, 'getGame']);
+    $routeCollection->get('game-json', '{mapId}/json', [MapGuesser\Controller\GameController::class, 'getGameJson']);
+    $routeCollection->get('newPlace-json', '{mapId}/newPlace.json', [MapGuesser\Controller\GameFlowController::class, 'getNewPlace']);
+    $routeCollection->post('guess-json', '{mapId}/guess.json', [MapGuesser\Controller\GameFlowController::class, 'evaluateGuess']);
+});
+Container::$routeCollection->group('admin', function (MapGuesser\Routing\RouteCollection $routeCollection) {
+    $routeCollection->get('admin.mapEditor', 'mapEditor/{mapId?}', [MapGuesser\Controller\MapAdminController::class, 'getMapEditor']);
+    $routeCollection->get('admin.place', 'place.json/{placeId}', [MapGuesser\Controller\MapAdminController::class, 'getPlace']);
+    $routeCollection->post('admin.saveMap', 'saveMap/{mapId}/json', [MapGuesser\Controller\MapAdminController::class, 'saveMap']);
+});
+
+Container::$sessionHandler = new MapGuesser\Session\DatabaseSessionHandler();
+
+session_set_save_handler(Container::$sessionHandler, true);
+session_start([
+    'gc_maxlifetime' => 604800,
+    'cookie_lifetime' => 604800,
+    'cookie_httponly' => true,
+    'cookie_samesite' => 'Lax'
+]);