diff --git a/app/controllers/seminars_controller.rb b/app/controllers/seminars_controller.rb
index caa4fd8..f7718c3 100644
--- a/app/controllers/seminars_controller.rb
+++ b/app/controllers/seminars_controller.rb
@@ -3,7 +3,7 @@ class SeminarsController < ApplicationController
   include MemberHelper
   include ActionView::Context #vary important (only add this can access @@session from view)
   include Admin::SeminarsHelper
-  FrontendMethods = ["show_privacy", "show_data", "check_email", "check_availability", "signup_ok", "add_file", "edit_file", "con_login", "con_upload", "con_logout","confirm_email_page","reset_password_page","edit_login_seminar_signup"]
+  FrontendMethods = ["show_privacy", "show_data", "check_email", "check_name", "check_availability", "signup_ok", "add_file", "edit_file", "con_login", "con_upload", "con_logout","confirm_email_page","reset_password_page","edit_login_seminar_signup"]
   # include SimpleCaptcha::ControllerHelpers
   def index
 
@@ -419,6 +419,24 @@ class SeminarsController < ApplicationController
 
   end
 
+  def check_name
+
+    params = OrbitHelper.params
+    success = true
+    if !params[:name].blank?
+      count = SeminarSignup.where(:name => params[:name], :seminar_main_id => params[:no]).count
+
+      result = count > 0 ? t('seminar.already_used') : t('seminar.available')
+      success = count > 0 ? false : true
+    end
+
+    render :json => {
+        "result" => result,
+        "success" => success
+    }.to_json
+
+  end
+
   def check_availability
 
     params = OrbitHelper.params
@@ -477,7 +495,7 @@ class SeminarsController < ApplicationController
         end
       end
     end
-    @signup = SeminarSignup.where(email: params[:seminar_signup][:email], seminar_main_id: seminar_id ).first
+    @signup = SeminarSignup.where(name: params[:seminar_signup][:name], email: params[:seminar_signup][:email], seminar_main_id: seminar_id ).first
 
     @seminar_signup = SeminarSignup.new(seminar_signup_params)
     not_signup_yet = @signup.blank?
@@ -529,7 +547,7 @@ class SeminarsController < ApplicationController
         end
       end
       if !not_signup_yet
-        notice_words = t('seminar.email_exist')
+        notice_words = t('seminar.email_or_name_exist')
         referer_url = get_referer_url_for_notice(notice_words)
         show_alert(notice_words)
       else
diff --git a/app/views/seminars/show.html.erb b/app/views/seminars/show.html.erb
index a5ab61e..d9ca678 100644
--- a/app/views/seminars/show.html.erb
+++ b/app/views/seminars/show.html.erb
@@ -160,6 +160,11 @@
                   <%= f.text_field :tel, :class=>"input-medium form-control", :placeholder=> signup_field.placeholder[I18n.locale], :required => true, pattern: "[\\d\\+\\-\\(\\)]{10,13}", title: t("seminar.phone_hint") %>
                   <p>(<%= t("seminar.phone_hint") %>)</p>
                 </div>
+              <% elsif signup_field.field_name == 'name' %>
+                <div class="col-sm-10">
+                  <%= f.text_field signup_field['field_name'], :class=>"input-medium form-control", :id=>signup_field['field_name'], :placeholder=> signup_field.placeholder[I18n.locale], :required => true %>
+                  <div class="loader"></div>
+                </div>
               <% else %>
                 <div class="col-sm-10">
                   <%= f.text_field signup_field['field_name'], :class=>"input-medium form-control", :id=>signup_field['field_name'], :placeholder=> signup_field.placeholder[I18n.locale], :required => true %>
@@ -400,7 +405,30 @@
     return false;
 
   });
-
+   $('#name').blur(function(){
+    var type = $(this).attr("id"),
+      loader = $(this).parent().find('.loader'),
+      elem = $(this),
+      value = $(this).val().trim() || null;
+    var checkAvailability = function(){
+      $.ajax({
+        url : "<%= "/xhr/seminars/check_name/#{@seminar.id}" %>",
+        data : {"type" : type, "name" : value},
+        dataType : "json",
+        type : "get",
+        success : function(data){
+          if( data.success == true ){
+            loader.removeClass("error");
+          }else{
+            loader.addClass("error");  
+          }
+          loader.text(data.result);
+        }
+      })
+    }
+    loader.text("Checking...")
+    checkAvailability();
+   });
   $('input[type="email"]').blur(function(){
     var type = $(this).attr("id"),
       loader = $(this).parent().find('.loader'),
diff --git a/config/locales/en.yml b/config/locales/en.yml
index f919cab..ac37abf 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -94,7 +94,7 @@ en:
     dashboard: Dashboard
     display_field: Display field
     note: Note
-    email_exist: "Email exist!"
+    email_exist: "Email or name exist!"
     email_signup_success: Signup success
     email_submission_success: Submission registration success
     email_add_file_success: Add file success
diff --git a/config/locales/zh_tw.yml b/config/locales/zh_tw.yml
index 46edc78..b867ff8 100644
--- a/config/locales/zh_tw.yml
+++ b/config/locales/zh_tw.yml
@@ -94,7 +94,7 @@ zh_tw:
     dashboard: 儀錶板
     display_field: 顯示的欄位
     note: 附註
-    email_exist: "email已存在!"
+    email_exist: "已存在!"
     email_signup_success: 報名成功
     email_submission_success: 投稿註冊成功
     email_add_file_success: 新增上傳成功
diff --git a/config/routes.rb b/config/routes.rb
index 4453b3a..043d2e5 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -116,6 +116,7 @@ Rails.application.routes.draw do
       end
     end
     get "/xhr/seminars/check_email/:no" => "seminars#check_email"
+    get "/xhr/seminars/check_name/:no" => "seminars#check_name"
   end
 
 end