diff --git a/app/js/post/post.js b/app/js/post/post.js
index 2fcda3d5..e5500f31 100644
--- a/app/js/post/post.js
+++ b/app/js/post/post.js
@@ -17,6 +17,13 @@ function post(mode, postvis) {
 	var acct_id = $('#post-acct-sel').val()
 	localStorage.setItem('last-use', acct_id)
 	var domain = localStorage.getItem('domain_' + acct_id)
+	if ($('#ideKey').val() != '') {
+		var ideKey = $('#ideKey').val()
+	} else {
+		var user = localStorage.getItem('user_' + acct_id)
+		var ideKey = Math.floor(Date.now() / 1000) + '/TheDesk/' + user + '@' + domain
+		$('#ideKey').val(ideKey)
+	}
 	if (!localStorage.getItem('cw_sentence')) {
 		var cw_sent = 500
 	} else {
@@ -148,12 +155,6 @@ function post(mode, postvis) {
 		}
 	}
 	console.table(toot)
-	if($('#ideKey').val() != ''){
-		var ideKey = $('#ideKey').val()
-	} else {
-		var ideKey = Date.now() + '/' + Math.random().toString(32).substring(2)
-		$('#ideKey').val(ideKey)
-	}
 	var httpreq = new XMLHttpRequest()
 	httpreq.open('POST', start, true)
 	httpreq.setRequestHeader('Content-Type', 'application/json')
diff --git a/app/view/make/index.sample.html b/app/view/make/index.sample.html
index 95a95971..2323b2cd 100644
--- a/app/view/make/index.sample.html
+++ b/app/view/make/index.sample.html
@@ -775,7 +775,7 @@
 				<a onclick="udgEx('Cutls@cutls.com','main')" class="contributor">
 					<img src="https://media.thedesk.top/accounts/avatars/000/000/001/original/d34ef8bb49d5e011.png">Cutls
 				</a><br>
-				・冪等性の確保
+				・冪等性の確保(これにより2秒以内の同一アカウントからの連投は禁止されます。)
 				<a onclick="udgEx('Cutls@cutls.com','main')" class="contributor">
 					<img src="https://media.thedesk.top/accounts/avatars/000/000/001/original/d34ef8bb49d5e011.png">Cutls
 				</a><br>