diff --git a/webapp/views.py b/webapp/views.py
index 4ca65ce..9656466 100644
--- a/webapp/views.py
+++ b/webapp/views.py
@@ -207,13 +207,16 @@ class SignupViewSet(ModelViewSet):
 
     def key_is_unique(self, submitKey):
         current_time = time.time()
+        printf("Checking", key)
         # Remove expired keys from dict (older than 1 h)
         # A key that expires as the function is called is considered valid
+        printf("Keys", submit_keys)
         SignupViewSet.submit_keys = {
             key: time
             for key, time in SignupViewSet.submit_keys.items()
             if time + 3600 >= current_time
         }
+        printf("After", submit_keys)
         if submitKey not in SignupViewSet.submit_keys:  # Key is unique; valid
             SignupViewSet.submit_keys[submitKey] = current_time
             return True