diff --git a/main.py b/main.py
index dcbc8fc..85ed310 100644
--- a/main.py
+++ b/main.py
@@ -44,9 +44,22 @@ import sys
 import ctypes
 from fido2.ctap2 import Ctap2
 
-REGISTER = False
 gotAaguid = None
 
+class CliInteraction(UserInteraction):
+    def prompt_up(self):
+        print("\nTouch your authenticator device now...\n")
+
+    def request_pin(self, permissions, rd_id):
+        return getpass("Enter PIN: ")
+
+    def request_uv(self, permissions, rd_id):
+        print("User Verification required.")
+        return True
+
+def badCred():
+    print("Bad credential!")
+    time.sleep(3)
 while True:
     while True:
         dev = next(CtapHidDevice.list_devices(), None)
@@ -63,16 +76,6 @@ while True:
         time.sleep(0.1)
 
     # Handle user interaction
-    class CliInteraction(UserInteraction):
-        def prompt_up(self):
-            print("\nTouch your authenticator device now...\n")
-
-        def request_pin(self, permissions, rd_id):
-            return getpass("Enter PIN: ")
-
-        def request_uv(self, permissions, rd_id):
-            print("User Verification required.")
-            return True
 
     try:
         server = Fido2Server({"id": "example.com", "name": "Example RP"}, attestation="direct")
@@ -125,6 +128,7 @@ while True:
                     return data
                 else:
                     print("No data found for AAGUID:", aaguid)
+                    badCred()
                     return None
 
                 # Close communication with the database