... CGI::Session::Tutorial - Extended CGI::Session manual . ... If it fails will create a brand new session with a unique ID, which is normally called I , I for short, and can be accessed through L<id()|CGI::Session/id()> - object method. ... If you prefer a different cookie name, you can change it as easily too, but you have to do it before CGI::Session object is created: . ... When expired session is requested CGI::Session will remove the data from disk, and will initialize a brand new session. ...