diff --git a/static/js/change.js b/static/js/change.js
index e67839f..ee1fd8e 100644
--- a/static/js/change.js
+++ b/static/js/change.js
@@ -1,3 +1,13 @@
+async function checkLogin() {
+    let resp = await fetch('../whoami', {
+        method: 'POST',
+    })
+    console.log('ok', resp)
+    data = await resp.json()
+    console.log('got', data)
+    // try... catch?
+}
+
 async function onGenerate(evt) {
     let resp = await fetch('../generate', {
         method: 'POST',
@@ -8,6 +18,7 @@ async function onGenerate(evt) {
     document.getElementById("generate-label").value = data.password
     document.getElementById("accept-btn").removeAttribute('disabled')
 }
+
 async function onAccept(evt) {
     document.getElementById("generate-btn").setAttribute('disabled', 'disabled')
     let resp = await fetch('../change', {
@@ -25,11 +36,14 @@ async function onAccept(evt) {
         document.getElementById("accept-btn").setAttribute('disabled', 'disabled')
     }
 }
+
 function initChange() {
+    checkLogin()
     document.getElementById("generate-label").value = ""
     document.getElementById("accept-btn").setAttribute('disabled', 'disabled')
     document.getElementById("generate-btn").addEventListener('click', onGenerate, false)
     document.getElementById("accept-btn").addEventListener('click', onAccept, false)
 }
+
 document.addEventListener('DOMContentLoaded', initChange)