diff --git a/express-server/routes/index.js b/express-server/routes/index.js
index 88899b92..e7b019d4 100644
--- a/express-server/routes/index.js
+++ b/express-server/routes/index.js
@@ -320,7 +320,21 @@ router.get("/invite/:link", async (req, res) => {
     });
 });
 
-router.get("/scan", (req, res) => {
+router.get("/scan/:idtoken", (req, res) => {
+
+  const token = req.params.idtoken;
+  var uid;
+  firebaseAdmin.auth().verifyIdToken(token)
+    .then(function(decodedToken) {
+      uid = decodedToken.uid;
+      // HIER WEITER MACHEN
+      // uid ist nur hier drinen verfügbar
+
+
+    }).catch(function(error) {
+      console.log(error)
+    });
+
   res.render("ocrscan");
 });