I don't understand what you are trying to accomplish. If you don't want to allow for a login to exceed the session, just don't offer "remember me" as an option. If you are looking to extend intro's lifetime beyond the session, you'll need to use cookies to store the value, or add it to persistent storage (i.e. database).
@mikefolsom
I want to extend intro lifetime just like "remember me" if User use this feature. That's my goal. If I understand you correctly I need use cookie or database to achieve this.
I need to store additional information when user is authenticated. I used to this session (which lifetime is default 120). If user useremember me this extra data in session expire after that time.
remember me only avoids filling in the login page. It does not preserve the session.
default lifetime is 120 (minutes) if the user does not submit an additional request in this time then the session is lost, and will be garbage collected at some point.