diff --git a/app/controllers/login_controller.rb b/app/controllers/login_controller.rb
--- a/app/controllers/login_controller.rb
+++ b/app/controllers/login_controller.rb
@@ -1,5 +1,7 @@
 class LoginController < ApplicationController
 
+  @@authenticators = []
+  
   def index
     # show login screen
     reset_session
@@ -7,7 +9,7 @@
   end
 
   def login
-    user = User.authenticate(params[:login], params[:password])
+    user = get_authenticated_user(params[:login], params[:password])
     unless user
       flash[:notice] = 'Wrong password'
       redirect_to :controller => 'main', :action => 'login'
@@ -60,4 +62,24 @@
     end
   end
 
+  def self.add_authenticator(authenticator)
+    @@authenticators << authenticator
+  end
+  
+  protected
+
+  def get_authenticated_user(login, password)
+    if @@authenticators.empty? 
+      return User.authenticate(login, password)
+    else
+      user = nil
+      @@authenticators.each do |authenticator|
+        if not user
+          user = authenticator.authenticate(login, password)
+        end
+      end
+      return user
+    end
+  end
+  
 end
diff --git a/config/initializers/cafe_grader_config.rb.SAMPLE b/config/initializers/cafe_grader_config.rb.SAMPLE
--- a/config/initializers/cafe_grader_config.rb.SAMPLE
+++ b/config/initializers/cafe_grader_config.rb.SAMPLE
@@ -28,3 +28,6 @@
 
 # Uncomment so that configuration is read only once when the server is loaded
 # CONFIGURATION_CACHE_ENABLED = true
+
+# Uncomment to allow authentication and user import from programming.in.th
+# LoginController.add_authenticator(ProgrammingAuthenticator.new)
diff --git a/lib/programming_authenticator.rb b/lib/programming_authenticator.rb
new file mode 100644
--- /dev/null
+++ b/lib/programming_authenticator.rb
@@ -0,0 +1,33 @@
+# Authentication and user imports through programming.in.th web request
+require 'net/http'
+require 'uri'
+require 'json'
+
+class ProgrammingAuthenticator
+  PROGRAMMING_AUTHEN_URL = "https://programming.in.th/authen.php"
+
+  def find_or_create_user(result)
+    user = User.find_by(login: result['username'])
+    if not user
+      user = User.new(login: result['username'],
+                      full_name: result['firstname'] + ' ' + result['surname'],
+                      alias: result['display'],
+                      email: result['email'])
+      user.password = User.random_password
+      user.save
+    end
+    return user
+  end
+  
+  def authenticate(login, password)
+    uri = URI(PROGRAMMING_AUTHEN_URL)
+    result = Net::HTTP.post_form(uri, 'username' => login, 'password' => password)
+    request_result = JSON.parse(result.body)
+
+    if request_result.fetch('status', 'incorrect') == 'OK'
+      return find_or_create_user(request_result)
+    else
+      return nil
+    end
+  end
+end