diff --git a/face_recognition/app/app.py b/face_recognition/app/app.py
index 9e1b555..f507a63 100644
--- a/face_recognition/app/app.py
+++ b/face_recognition/app/app.py
@@ -14,6 +14,28 @@ def access_minio():
     for bucket in minioClient.list_buckets():
         print(bucket.name, bucket.creation_date, flush=True)
     return('Connection Succesfull')
+  
+@app.route('/new_user_id')
+def new_user_id():
+    id = None
+    for limited_try in range(0,5):
+	    id = str(uuid.uuid4())
+	    if check_id(id) == False:
+            break
+#funktionalität implementieres s3 Platzhalterdatei anlegen für user,
+    return(id)
+                
+def check_id(id):
+  	#return True -> id bereits verwendet
+    #return False -> id noch nicht verwendet
+    users = minioClient.list_objects('users')
+    known = False
+    for user in users:
+        if id == user.object_name.encode('utf-8'):
+            known = True
+        else:
+            pass
+    return known
           
 def setup():
     minioClient = Minio('minio:9000', access_key=os.environ['s3-name'], secret_key=os.environ['s3-password'], secure=False)