diff --git a/lib/simple_captcha/engine.rb b/lib/simple_captcha/engine.rb
index faea91d..5b5ad4d 100644
--- a/lib/simple_captcha/engine.rb
+++ b/lib/simple_captcha/engine.rb
@@ -15,6 +15,8 @@ class Engine < ::Rails::Engine
           end
         when 'mongoid'
           require 'simple_captcha/simple_captcha_data_mongoid.rb'
+        when 'mongomapper'
+          require 'simple_captcha/simple_captcha_data_mongomapper.rb'
         when 'redis'
           require 'simple_captcha/simple_captcha_data_redis.rb'
         else
diff --git a/lib/simple_captcha/simple_captcha_data_mongomapper.rb b/lib/simple_captcha/simple_captcha_data_mongomapper.rb
new file mode 100644
index 0000000..435bb76
--- /dev/null
+++ b/lib/simple_captcha/simple_captcha_data_mongomapper.rb
@@ -0,0 +1,26 @@
+module SimpleCaptcha
+  class SimpleCaptchaData
+    include MongoMapper::Document
+    plugin MongoMapper::Plugins::Timestamps
+    timestamps!
+
+    key :key, String, :required => true
+    key :value, String, :required => true
+
+    class << self
+      def get_data(key)
+        data = where(:key => key).first || new(:key => key)
+      end
+          
+      def remove_data(key)
+        where(:key => key).remove
+        clear_old_data(1.hour.ago)
+      end
+          
+      def clear_old_data(time = 1.hour.ago)
+        return unless Time === time
+        where(:updated_at.lte => time).remove
+      end
+    end
+  end
+end
\ No newline at end of file