diff --git a/src/TaxBaik.Web/wwwroot/js/admin-session.js b/src/TaxBaik.Web/wwwroot/js/admin-session.js
index c04edfc..f57b2cd 100644
--- a/src/TaxBaik.Web/wwwroot/js/admin-session.js
+++ b/src/TaxBaik.Web/wwwroot/js/admin-session.js
@@ -308,6 +308,8 @@ window.taxbaikAdminSession = {
             if (submitButton) submitButton.disabled = true;
 
             try {
+                window.taxbaikAdminSession.traceUiState('admin-login', `submit: username=${username ? 'yes' : 'no'}, password=${password ? 'yes' : 'no'}`);
+
                 if (!username || !password) {
                     throw new Error('username/password missing');
                 }