I want to include "Remember Me" functionality on login page but I don't know its actual meaning (how its work). I have seen different uses at many websites but I didn't get its actual meaning.
Some web applications may need a "Remember Me" functionality. This means that, after a user login, user will have access from same machine to all its data even after session expired. This access will be possible until user does a logout.
From here Using Cookies to implement a RememberMe functionality