http://q.hatena.ne.jp/1213709495

http://doruby.kbmj.com/akio0911_on_rails/20080325/Ruby_PaSoRi_Suica_ http://mig-ration.blogspot.com/2007/04/ruby-suica.html http://www.imfj.net/people/nomura/soft/PaSoRi/SuicaValue.html http://www.jp.sonystyle.com/Qnavi/Detail/RC-S320.html…

http://d.hatena.ne.jp/good2nd/20080620/1213976104