diff --git a/i_entrance/logoutPost.php b/i_entrance/logoutPost.php
index d7bc0d38..1360d2f7 100644
--- a/i_entrance/logoutPost.php
+++ b/i_entrance/logoutPost.php
@@ -7,10 +7,9 @@ require_once(ROOT.'/f_config/SESSION.php');
 
 
 $SESSION->logout();
+unset($_SESSION['access_token']);
+setcookie("hello", "", time()-3600);
 
-$response['result'] = 'SUCCESS';
-
-sleep(1);
-echo json_encode($response);
-
-
+echo json_encode([
+    'result'=>'SUCCESS'
+]);
\ No newline at end of file
diff --git a/i_login/j_login.php b/i_login/j_login.php
index 9d2c3c79..2d778116 100644
--- a/i_login/j_login.php
+++ b/i_login/j_login.php
@@ -2,6 +2,7 @@
 require_once('_common.php');
 require_once(ROOT.'/f_func/class._Session.php');
 require_once(ROOT.'/f_func/class._String.php');
+require(ROOT.'/f_func/class._Time.php');
 require_once(ROOT.'/f_config/DB.php');
 
 use utilphp\util as util;
@@ -21,8 +22,16 @@ if(!$username || !$password){
     ]);
 }
 
+$canLogin = getRootDB()->queryFirstField('SELECT `LOGIN` FROM `SYSTEM` WHERE `NO` = 1');
+if($canLogin != 'Y'){
+    returnJson([
+        'result'=>false,
+        'reason'=>'현재는 로그인이 금지되어있습니다!'
+    ]);
+}
+
 $userInfo = getRootDB()->queryFirstRow(
-    'SELECT `no`, `id`, `name`, `grade` '.
+    'SELECT `no`, `id`, `name`, `grade`, `delete_after` '.
     'from member where id=%s_username AND '.
     'pw=sha2(concat(salt, %s_password, salt), 512)',[
         'username'=>$username,
@@ -36,6 +45,24 @@ if(!$userInfo){
     ]);
 }
 
+$nowDate = _Time::DatetimeNow();
+if($userInfo['delete_after']){
+    if($userInfo['delete_after'] < $nowDate){
+        getRootDB()->delete('member', 'no=%i', $userInfo['no']);
+        returnJson([
+            'result'=>false,
+            'reason'=>"기간 만기로 삭제되었습니다. 재 가입을 시도해주세요."
+        ]);
+    }
+    else{
+        returnJson([
+            'result'=>false,
+            'reason'=>"삭제 요청된 계정입니다.[{$userInfo['delete_after']}]"
+        ]);
+    }
+    
+}
+
 $SESSION->login($userInfo['no'], $userInfo['id'], $userInfo['grade']);
 returnJson([
     'result'=>true,
diff --git a/tmp_kakao/index.php b/tmp_kakao/index.php
index be91de3f..e0fb31b6 100644
--- a/tmp_kakao/index.php
+++ b/tmp_kakao/index.php
@@ -7,9 +7,86 @@ require('conf.php');
     <meta charset="UTF-8">
     <meta http-equiv="X-UA-Compatible" content="ie=edge">
     <title>카카오 로그인하기</title>
+    <script src="../e_lib/jquery-3.2.1.min.js"></script>
+<script>
+
+var oauthMode = null;
+
+function getOAuthToken(mode='login', scope_list = null){
+    oauthMode = mode;
+    var url = 'https://kauth.kakao.com/oauth/authorize?client_id=<?=KakaoKey::REST_KEY?>&redirect_uri=<?=KakaoKey::REDIRECT_URI?>&response_type=code';
+    if(Array.isArray(scope_list)){
+        url += '&scope='+scope_list.join(',');
+    }
+    else if(typeof scope_list === 'string' || scope_list instanceof String){
+        url += '&scope='+scope_list;
+    }
+
+    window.open(url,"KakaoAccountLogin","width=600,height=450");
+
+}
+
+function sendTempPasswordToKakaoTalk(retry=false){
+    $.post({
+        url:'j_change_pw.php',
+        dataType:'json'
+    }).then(function(obj){
+        if (!obj.result && retry) {
+            getOAuthToken('change_pw', 'talk_message');
+        }
+        else if(!obj.result){
+            alert(obj.reason);
+        }
+        else{
+            alert('임시 비밀번호가 카카오톡으로 전송되었습니다.');
+        }
+    });
+}
+
+function doLoginUsingOAuth(retry=false){
+    $.post({
+        url:'j_login_oauth.php',
+        dataType:'json'
+    }).then(function(obj){
+        if(!obj.result){
+            if(obj.noRetry || !retry){
+                alert(obj.reason);
+            }
+            else{
+                getOAuthToken();
+            }
+        }
+        else{
+            window.location.href = '../';
+        }
+    });
+}
+
+function postOAuthResult(result){
+    if(result == 'join'){
+        window.location.href = 'join.php';
+    }
+    else if(result == 'login'){
+        console.log('로그인모드');
+        if(oauthMode=='change_pw'){
+            sendTempPasswordToKakaoTalk();
+        }
+    }
+    else{
+        alert('예외 발생!');
+    }
+}
+
+
+
+</script>
 </head>
 <body>
     
-    <a href="https://kauth.kakao.com/oauth/authorize?client_id=<?=KakaoKey::REST_KEY?>&redirect_uri=<?=KakaoKey::REDIRECT_URI?>&response_type=code"><img src="kakao_btn.png"></a>
+    <a href="javascript:doLoginUsingOAuth(true);"><img src="kakao_btn.png"></a><br>
+<br>
+    비밀번호 찾기<br>
+    <a href="javascript:sendTempPasswordToKakaoTalk(true);"><img src="kakao_to_me.png"></a>
+<input type='hidden' name="login_mode" id="login_mode">
 </body>
 </html>
\ No newline at end of file
diff --git a/tmp_kakao/j_change_pw.php b/tmp_kakao/j_change_pw.php
new file mode 100644
index 00000000..566dcdbc
--- /dev/null
+++ b/tmp_kakao/j_change_pw.php
@@ -0,0 +1,6 @@
+<?php
+
+require('_common.php');
+require(ROOT.'/f_config/DB.php');
+require(ROOT.'/f_func/class._Time.php');
+require('kakao.php');
\ No newline at end of file
diff --git a/tmp_kakao/j_join_process.php b/tmp_kakao/j_join_process.php
index bf82fa0d..00b34993 100644
--- a/tmp_kakao/j_join_process.php
+++ b/tmp_kakao/j_join_process.php
@@ -28,7 +28,8 @@ if(!$access_token){
         'reason'=>'로그인 토큰 에러. 다시 카카오로그인을 수행해주세요.'
     ]);
 }
-if($refresh_token_expires < $nowDate){
+if($expires < $nowDate && (!$refresh_token || ($refresh_token_expires < $nowDate))){
+    unset($_SESSION['access_token']);
     returnJson([
         'result'=>false,
         'reason'=>'로그인 토큰 만료.'.$refresh_token_expires.' 다시 카카오로그인을 수행해주세요.'
@@ -85,6 +86,7 @@ $restAPI = new Kakao_REST_API_Helper($access_token);
 if($expires < $nowDate){
     $result = $restAPI->refresh_access_token($refresh_token);
     if(!isset($refresh_token)){
+        unset($_SESSION['access_token']);
         returnJson([
             'result'=>false,
             'reason'=>'카카오 로그인 과정 중 추가 갱신 절차를 실패했습니다'
@@ -111,6 +113,15 @@ if(!$kakaoID && util::array_get($signupResult['msg'])!='already registered'){
 }
 
 $me = $restAPI->meWithEmail();
+$me['code'] = util::array_get($me['code'], 0);
+if ($me['code']< 0) {
+    $restAPI->unlink();
+    returnJson([
+        'result'=>false,
+        'reason'=>'카카오로그인이 정상적으로 수행되지 않았습니다.'
+    ]);
+}
+
 if(!util::array_get($me['kaccount_email_verified'],false)){
     $restAPI->unlink();
     returnJson([
@@ -120,6 +131,7 @@ if(!util::array_get($me['kaccount_email_verified'],false)){
 }
 
 $email = $me['kaccount_email'];
+$_SESSION['kaccount_email'] = $email;
 $emailChk = checkEmailDup($email);
 if($emailChk !== true){
     $restAPI->unlink();
@@ -130,8 +142,6 @@ if($emailChk !== true){
 }
 
 //모든 절차 종료. 등록.
-
-
 getRootDB()->insert('auth_kakao',[
     'id'=>$kakaoID,
     'access_token'=>$access_token,
diff --git a/tmp_kakao/j_login_oauth.php b/tmp_kakao/j_login_oauth.php
new file mode 100644
index 00000000..cc9f8fed
--- /dev/null
+++ b/tmp_kakao/j_login_oauth.php
@@ -0,0 +1,130 @@
+<?php
+require('_common.php');
+require(ROOT.'/f_func/class._Session.php');
+require(ROOT.'/f_config/DB.php');
+require(ROOT.'/f_func/class._Time.php');
+require('kakao.php');
+use utilphp\util as util;
+
+$SESSION = new _Session();
+if($SESSION->isLoggedIn()){
+    $SESSION->logout();
+}
+
+$canLogin = getRootDB()->queryFirstField('SELECT `LOGIN` FROM `SYSTEM` WHERE `NO` = 1');
+if($canLogin != 'Y'){
+    returnJson([
+        'result'=>false,
+        'reason'=>'현재는 로그인이 금지되어있습니다!',
+        'noRetry'=>true
+    ]);
+}
+
+$nowDate = _Time::DatetimeNow();
+
+$access_token = util::array_get($_SESSION['access_token']);
+$expires = util::array_get($_SESSION['expires']);
+$refresh_token = util::array_get($_SESSION['refresh_token']);
+$refresh_token_expires = util::array_get($_SESSION['refresh_token_expires']);
+$email = util::array_get($_SESSION['kaccount_email']);
+
+
+if(!$access_token || !$expires){
+    returnJson([
+        'result'=>false,
+        'reason'=>'카카오로그인이 이루어지지 않았습니다.'
+    ]);
+}
+
+//TODO: join과 login의 동작이 비슷하다. helper class로 묶자.
+$restAPI = new Kakao_REST_API_Helper($access_token);
+
+if($expires < $nowDate && (!$refresh_token || ($refresh_token_expires < $nowDate))){
+    returnJson([
+        'result'=>false,
+        'reason'=>'로그인 토큰 만료.'.$refresh_token_expires.' 다시 카카오로그인을 수행해주세요.'
+    ]);
+}
+
+if($expires < $nowDate){
+    unset($_SESSION['kaccount_email']);
+    $email = null;
+
+    $result = $restAPI->refresh_access_token($refresh_token);
+    if(!isset($refresh_token)){
+        returnJson([
+            'result'=>false,
+            'reason'=>'카카오 로그인 과정 중 추가 갱신 절차를 실패했습니다'
+        ]);
+    }
+
+    $access_token = $result['access_token'];
+    $expires = _Time::DatetimeFromNowSecond($nowDate, $result['expires_in']);
+    if(isset($result['refresh_token'])){
+        $refresh_token = util::array_get($result['refresh_token']);
+        $refresh_token_expires = _Time::DatetimeFromNowSecond($nowDate, $result['refresh_token_expires_in']);
+    }
+}
+
+
+if(!$email){
+    $me = $restAPI->meWithEmail();
+    $me['code'] = util::array_get($me['code'], 0);
+    if ($me['code']< 0) {
+        returnJson([
+            'result'=>false,
+            'reason'=>'카카오로그인이 정상적으로 수행되지 않았습니다.'
+        ]);
+    }
+
+    if(!util::array_get($me['kaccount_email_verified'],false)){
+        $restAPI->unlink();
+        returnJson([
+            'result'=>false,
+            'reason'=>'카카오 계정 이메일이 아직 인증되지 않았습니다'
+        ]);
+    }
+    
+    $email = $me['kaccount_email'];
+    $_SESSION['kaccount_email'] = $email;
+}
+
+
+$userInfo = getRootDB()->queryFirstRow(
+    'SELECT `no`, `id`, `name`, `grade`, `delete_after` from member where email=%s',$email);
+
+if(!$userInfo){
+    $restAPI->unlink();
+    unset($_SESSION['access_token']);
+    returnJson([
+        'result'=>false,
+        'reason'=>'카카오로그인에 해당하는 계정이 없습니다. 재 가입을 시도해주세요.'
+    ]);
+}
+
+if($userInfo['delete_after']){
+    if($userInfo['delete_after'] < $nowDate){
+        $restAPI->unlink();
+        unset($_SESSION['access_token']);
+        getRootDB()->delete('member', 'no=%i', $userInfo['no']);
+        returnJson([
+            'result'=>false,
+            'reason'=>"기간 만기로 삭제되었습니다. 재 가입을 시도해주세요."
+        ]);
+    }
+    else{
+        $restAPI->unlink();
+        unset($_SESSION['access_token']);
+        returnJson([
+            'result'=>false,
+            'reason'=>"삭제 요청된 계정입니다.[{$userInfo['delete_after']}]"
+        ]);
+    }
+    
+}
+
+$SESSION->login($userInfo['no'], $userInfo['id'], $userInfo['grade']);
+returnJson([
+    'result'=>true,
+    'reason'=>'로그인 되었습니다.'
+]);
\ No newline at end of file
diff --git a/tmp_kakao/kakao.php b/tmp_kakao/kakao.php
index 76b42044..e822930e 100644
--- a/tmp_kakao/kakao.php
+++ b/tmp_kakao/kakao.php
@@ -39,6 +39,7 @@ class Talk_Path
 {
   public static $TALK_PROFILE= "/v1/api/talk/profile";
   public static $TALK_TO_ME  = "/v2/api/talk/memo/send";
+  public static $TALK_TO_ME_DEFAULT  = "/v2/api/talk/memo/default/send";
 }
 
 class Push_Notification_Path
@@ -230,6 +231,10 @@ class Kakao_REST_API_Helper
     return $this->request(Talk_Path::$TALK_PROFILE);
   }
 
+  public function talk_to_me_default($req){
+    return $this->request(TalkPath::$TALK_TO_ME_DEFAULT, json_encode($req), 'POST');
+  }
+
 
   ///////////////////////////////////////////////////////////////
   // API Test
diff --git a/tmp_kakao/kakao_btn.png b/tmp_kakao/kakao_btn.png
index a29c7a7f..b5054672 100644
Binary files a/tmp_kakao/kakao_btn.png and b/tmp_kakao/kakao_btn.png differ
diff --git a/tmp_kakao/kakao_to_me.png b/tmp_kakao/kakao_to_me.png
new file mode 100644
index 00000000..f6c98e3e
Binary files /dev/null and b/tmp_kakao/kakao_to_me.png differ
diff --git a/tmp_kakao/lib.join.php b/tmp_kakao/lib.join.php
index 33bc6ca7..c3677cfb 100644
--- a/tmp_kakao/lib.join.php
+++ b/tmp_kakao/lib.join.php
@@ -2,6 +2,7 @@
 require_once('_common.php');
 require_once(__dir__.'/../d_setting/conf.php');
 require_once(__dir__.'/../f_func/func.php');
+require(ROOT.'/f_func/class._Time.php');
 
 function checkUsernameDup($username){
     if(!$username){
@@ -48,9 +49,19 @@ function checkEmailDup($email){
         return '적절하지 않은 길이입니다.';
     }
 
-    $cnt = getRootDB()->queryFirstField('SELECT count(no) FROM member WHERE `email` = %s LIMIT 1', $email);
-    if($cnt != 0){
-        return '이미 사용중인 이메일입니다';
+    $userInfo = getRootDB()->queryFirstField('SELECT `no`, `delete_after` FROM member WHERE `email` = %s LIMIT 1', $email);
+    if($userInfo){
+        $nowDate = _Time::DatetimeNow();
+        if (!$userInfo['delete_after']) {
+            return '이미 사용중인 이메일입니다. 관리자에게 문의해주세요.';
+        }
+
+        if($userInfo['delete_after'] >= $userInfo){
+            return "삭제 요청된 계정입니다.[{$userInfo['delete_after']}]";
+        }
+
+        //$userInfo['delete_after'] < $userInfo
+        getRootDB()->delete('member', 'no=%i', $userInfo['no']);
     }
     return true;
 }
\ No newline at end of file
diff --git a/tmp_kakao/oauth.php b/tmp_kakao/oauth.php
index 3f6c54c8..a9bfb5c1 100644
--- a/tmp_kakao/oauth.php
+++ b/tmp_kakao/oauth.php
@@ -1,6 +1,5 @@
 <?php
 require('_common.php');
-require(ROOT.'/f_config/DB.php');
 require(ROOT.'/f_func/class._Time.php');
 require('kakao.php');
 use utilphp\util as util;
@@ -42,23 +41,31 @@ $_SESSION['tmpx'] = json_encode($result,JSON_UNESCAPED_UNICODE);
 //echo "<br>\n";
 $me = $restAPI->meWithEmail();
 
-var_dump($me);
+$oauth_mode = 'login';
 
 $me['code'] = util::array_get($me['code'], 0);
 if($me['code']< 0){
     switch($me['msg']){
     case 'NotRegisteredUserException':
-        header('Location:join.php', true, 303);
-        die();
+        $oauth_mode = 'join';
+        break;
     default:
-        die('알 수 없는 에러:'.$me['msg']);
+        $oauth_mode = 'error';
     }
 }
+else{
+    $_SESSION['kaccount_email'] = $me['kaccount_email'];
+}
 
-
-
-//이메일 주소를 받아옴
-
-//
-//$db = getRootDB();
-//TODO: 로그인된 유저인지 확인해야함.
+?>
+<!DOCTYPE html>
+<html lang="ko">
+<head>
+<meta charset="UTF-8">
+<meta http-equiv="X-UA-Compatible" content="ie=edge">
+<script>
+opener.location.href="javascript:postOAuthResult('<?=$oauth_mode?>');";
+window.close();
+</script>
+</head>
+</html>
\ No newline at end of file