diff --git a/identity_iot.py b/identity_iot.py
index b13ed9c..7481adb 100644
--- a/identity_iot.py
+++ b/identity_iot.py
@@ -123,8 +123,9 @@ class IdentityIoT:
             raise Exception('verify_signature failed: ' + str(resp))
 
         token = resp.get('token', '')
-        if token:
-            self._save_jwt(token)
+        # JWT not cached — fresh challenge/verify every time
+        # if token:
+        #     self._save_jwt(token)
         return token
 
     def get_node_uid(self):