diff --git a/middleware/checkAuthenticated.js b/miscellaneous/checkAuthenticated.ts
similarity index 60%
rename from middleware/checkAuthenticated.js
rename to miscellaneous/checkAuthenticated.ts
index af6aa53..9545479 100644
--- a/middleware/checkAuthenticated.js
+++ b/miscellaneous/checkAuthenticated.ts
@@ -1,7 +1,8 @@
+import { type Express, type NextFunction, type Request, type Response } from "express";
+import UserModel from '../models/userModel';
 
-var UserModel = require('../models/userModel');
 
-async function checkAuthenticated(req, res, next) {
+async function checkAuthenticated(req: Request, res: Response, next: NextFunction) {
   try {
     const password = req.body.pass;
     const userFound = await UserModel.findOne({ pass: password });
@@ -16,4 +17,4 @@ async function checkAuthenticated(req, res, next) {
   }
 }
 
-module.exports = checkAuthenticated;
\ No newline at end of file
+export default checkAuthenticated;
\ No newline at end of file
diff --git a/miscellaneous/custom.d.ts b/miscellaneous/custom.d.ts
new file mode 100644
index 0000000..f412d8e
--- /dev/null
+++ b/miscellaneous/custom.d.ts
@@ -0,0 +1,13 @@
+
+
+declare namespace Express {
+  export interface Request {
+    user?: Document<unknown, {}, {
+      pass?: string | undefined;
+      omdb_key?: string | undefined;
+      twitch_client_id?: string | undefined;
+      twitch_client_secret?: string | undefined;
+      mac_address?: string | undefined;
+    }>
+  }
+}
\ No newline at end of file
diff --git a/routes/api/apiRouter.js b/routes/api/apiRouter.js
index 5b4cd75..d742c64 100644
--- a/routes/api/apiRouter.js
+++ b/routes/api/apiRouter.js
@@ -1,6 +1,6 @@
 var express = require('express');
 var router = express.Router();
-const checkAuthenticated = require('../../middleware/checkAuthenticated.js');
+const checkAuthenticated = require('../../miscellaneous/checkAuthenticated.js').default;
 
 var mediaRouter = require('./mediaRouter');
 var gameRouter = require('./gameRouter');
diff --git a/routes/api/gameRouter.js b/routes/api/gameRouter.js
index 0665ad4..b28d482 100644
--- a/routes/api/gameRouter.js
+++ b/routes/api/gameRouter.js
@@ -1,7 +1,7 @@
 var express = require('express');
 var router = express.Router();
 var gameController = require('../../controllers/gameController.js');
-var checkAuthenticated = require('../../middleware/checkAuthenticated.js');
+var checkAuthenticated = require('../../miscellaneous/checkAuthenticated.js').default;
 
 router.get('/', gameController.list);
 
diff --git a/routes/api/mediaRouter.js b/routes/api/mediaRouter.js
index 3f15bc1..dccd67a 100644
--- a/routes/api/mediaRouter.js
+++ b/routes/api/mediaRouter.js
@@ -1,7 +1,7 @@
 var express = require('express');
 var router = express.Router();
 var mediaController = require('../../controllers/mediaController.js');
-var checkAuthenticated = require('../../middleware/checkAuthenticated.js');
+var checkAuthenticated = require('../../miscellaneous/checkAuthenticated.js').default;
 
 router.get('/', mediaController.list);
 
diff --git a/routes/user.js b/routes/user.js
index 16f6570..8d16980 100644
--- a/routes/user.js
+++ b/routes/user.js
@@ -1,7 +1,7 @@
 var express = require('express');
 var router = express.Router();
 var userController = require('../controllers/userController.js');
-const checkAuthenticated = require('../middleware/checkAuthenticated.js');
+const checkAuthenticated = require('../miscellaneous/checkAuthenticated.js').default;
 
 /* GET home page. */
 router.get('/', function (req, res, next) {