diff --git a/src/Exception/ExceptionInterface.php b/src/Exception/ExceptionInterface.php
index 9e769d6..1329a73 100644
--- a/src/Exception/ExceptionInterface.php
+++ b/src/Exception/ExceptionInterface.php
@@ -23,7 +23,7 @@
  * SOFTWARE.
  */
 
-namespace Omatamix\SessionLock\Exception;
+namespace Cytrenna\Session\Exception;
 
 use Throwable;
 
diff --git a/src/Exception/InvalidFingerprintException.php b/src/Exception/InvalidFingerprintException.php
index 0bcd18a..5f119de 100644
--- a/src/Exception/InvalidFingerprintException.php
+++ b/src/Exception/InvalidFingerprintException.php
@@ -23,7 +23,7 @@
  * SOFTWARE.
  */
 
-namespace Omatamix\SessionLock\Exception;
+namespace Cytrenna\Session\Exception;
 
 use Exception;
 
diff --git a/src/Exception/SessionClosedException.php b/src/Exception/SessionClosedException.php
new file mode 100644
index 0000000..71a35d1
--- /dev/null
+++ b/src/Exception/SessionClosedException.php
@@ -0,0 +1,35 @@
+<?php declare(strict_types=1);
+/**
+ * MIT License
+ * 
+ * Copyright (c) 2021 Nicholas English
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+namespace Cytrenna\Session\Exception;
+
+use RuntimeException;
+
+/**
+ * If the session is closed.
+ */
+class SessionClosedException extends RuntimeException implements ExceptionInterface
+{
+}
diff --git a/src/Exception/SessionRunningException.php b/src/Exception/SessionRunningException.php
new file mode 100644
index 0000000..4d19f69
--- /dev/null
+++ b/src/Exception/SessionRunningException.php
@@ -0,0 +1,35 @@
+<?php declare(strict_types=1);
+/**
+ * MIT License
+ * 
+ * Copyright (c) 2021 Nicholas English
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+namespace Cytrenna\Session\Exception;
+
+use RuntimeException;
+
+/**
+ * If the session is running.
+ */
+class SessionRunningException extends RuntimeException implements ExceptionInterface
+{
+}
diff --git a/src/SessionManager.php b/src/SessionManager.php
index 011514f..3acf4b5 100644
--- a/src/SessionManager.php
+++ b/src/SessionManager.php
@@ -94,44 +94,93 @@ public function start(): bool
     /**
      * {@inheritdoc}
      */
-    public function stop(): bool
+    public function stopSession(bool $logout = false): bool
     {
-        $_SESSION = array();
-        if (ini_get("session.use_cookies")) {
-            $params = session_get_cookie_params();
-            setcookie(session_name(), '', time() - 42000,
-                $params["path"], $params["domain"],
-                $params["secure"], $params["httponly"]
-            );
+        // Attempt to destory the session if running.
+        if ($this->isRunning()) {
+            // Clear all session variables
+            $this->clear();
+            // Void the session cookie
+            $this->voidSessionCookie();
+            // Free the session ID.
+            $this->freeSessionID();
+            // Regenerate session ID.
+            if ($logout)
+                $this->regenerateSessionID();
+            // Destroy the session.
+            return $this->destroySession();
         }
-        return session_destroy();
+        return true;
     }
 
     /**
      * {@inheritdoc}
      */
-    public function exists(): bool
+    public function isRunning(): bool
     {
-        if (php_sapi_name() !== 'cli') {
-            return session_status() === PHP_SESSION_ACTIVE ? true : false;
-        }
-        return false;
+        // Return false on the command line cli.
+        if (PHP_SAPI === 'cli' || PHP_SAPI === 'phpdbg')
+            return false;
+        // Return the current session status.
+        return session_status() === PHP_SESSION_ACTIVE;
     }
 
     /**
      * {@inheritdoc}
      */
-    public function regenerate(bool $deleteOldSession = true): bool
+    public function regenerateSessionID(bool $deleteOldSession = true): bool
     {
+        // Regenerate the session ID.
         return session_regenerate_id($deleteOldSession);
     }
 
+    /**
+     * {@inheritdoc}
+     */
+    public function clear(): bool
+    {
+        // Clear all session variable.
+        $_SESSION = array();
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function voidSessionCookie(): bool
+    {
+        // Void the session cookie.
+        if (ini_get("session.use_cookies") && isset($_COOKIE[session_name()])) {
+            // Get the cookie params.
+            $params = session_get_cookie_params();
+            // Delete the cookie.
+            setcookie(session_name(), '', time() - 42000,
+                $params["path"] ?? '/',
+                $params["domain"] ?? '',
+                $params["secure"] ?? false,
+                $params["httponly"] ?? false
+            );
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function freeSessionID(): bool
+    {
+        // Free the session ID.
+        session_unset();
+    }
+
     /**
      * {@inheritdoc}
      */
     public function has(string $key): bool
     {
-        return isset($_SESSION[$key]);
+        if ($this->isRunning()) {
+            // Check to see if the session variable is set.
+            return isset($_SESSION[$key]);
+        }
+        return false;
     }
 
     /**
@@ -139,7 +188,10 @@ public function has(string $key): bool
      */
     public function get(string $key, $defaultValue = null)
     {
-        return $this->has($key) ? $_SESSION[$key] : $defaultValue;
+        // Check to see if the session is running.
+        if ($this->isRunning()) {
+            return $this->has($key) ? $_SESSION[$key] : $defaultValue;
+        }
     }
 
     /**
@@ -147,9 +199,16 @@ public function get(string $key, $defaultValue = null)
      */
     public function flash(string $key, $defaultValue = null)
     {
-        $value = $this->get($key, $defaultValue);
-        $this->delete($key);
-        return $value;
+        // Check to see if the session is running.
+        if ($this->isRunning()) {
+            // Retrieve the session variable.
+            $value = $this->get($key, $defaultValue);
+            // Unset the session variable.
+            $this->delete($key);
+            // Return the value.
+            return $value;
+        }
+        return $defaultValue;
     }
 
     /**
@@ -157,7 +216,11 @@ public function flash(string $key, $defaultValue = null)
      */
     public function put(string $key, $value): void
     {
-        $_SESSION[$key] = $value;
+        // Check to see if the session is running.
+        if ($this->isRunning()) {
+            // Set a seasion variable.
+            $_SESSION[$key] = $value;
+        }
     }
 
     /**
@@ -165,7 +228,11 @@ public function put(string $key, $value): void
      */
     public function delete(string $key): void
     {
-        unset($_SESSION[$key]);
+        // Check to see if the session is running.
+        if ($this->isRunning()) {
+            // Unset the session variable.
+            unset($_SESSION[$key]);
+        }
     }
 
     /**
diff --git a/src/SessionMiddleware.php b/src/SessionMiddleware.php
index 8b13789..3bd9044 100644
--- a/src/SessionMiddleware.php
+++ b/src/SessionMiddleware.php
@@ -1 +1,78 @@
+<?php declare(strict_types=1);
+/**
+ * MIT License
+ * 
+ * Copyright (c) 2026 Nicholas English
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
 
+namespace Cytrenna\Session;
+
+/**
+ * Callable session middleware.
+ */
+class SessionMiddleware
+{
+    /** @var \Cytrenna\Session\SessionManager $session The session manager. */
+    protected SessionManager $session;
+
+    /**
+     * Construct the session middleware.
+     *
+     * @param \Cytrenna\Session\SessionManager $session The session manager.
+     *
+     * @return void Returns nothing.
+     */
+    public function __construct(SessionManager $session)
+    {
+        $this->session = $session;
+    }
+
+    public function handle(callable $next)
+    {
+        // Start the session if not already started.
+        if ($this->session->isRunning()) {
+            // Validate the session fingerprint.
+            if ($this->session->fingerprintEnabled()) {
+                $fingerprint = $this->session->generateUniqueFingerprint();
+                if ($this->session->has('cytrenna.fingerprint')) {
+                    if (!hash_equals($this->session->has('cytrenna.fingerprint'), $fingerprint)) {
+                        $this->session->stopSession();
+                        throw new InvalidFingerprintException('The fingerprint supplied is invalid.');
+                    }
+                } else {
+                    $this->session->put('cytrenna.fingerprint', $fingerprint);
+                }
+            }
+            // Prevent AJAX requests.
+            if ($this->session->disallowAjaxRequests()) {
+                if ($this->session->isAjaxRequest()) {
+                    throw new AjaxRestrictedException('This application does not allow ajax requests.');
+                }
+            }
+            // Start the session.
+            $this->session->start();
+        }
+        // Call the next middleware or controller.
+        $response = $next();
+        // Returned the response.
+        return $response;
+    }
+}