As we discussed earlier in "Facebook Login and Sign in Settings", your favorite social networking site understands that it may well be your most common visit online, and that having to manually login any time you want to check your profile or update your account may quickly become cumbersome. For this reason, Facebook includes in the sign in form the option to "Keep me logged in". In this tutorial, we will explain how to leverage this option and make Facebook remember your password, and simple steps to troubleshoot problems (i.e., Facebook does not remember your password even if you enabled this option).
When you access the Facebook homepage (www.facebook.com), you will either see your main profile page (if you are currently signed in to your account), or the generic homepage that contains the sign in form and login button -among other things- when you are signed out.
Tip: to enable the "remember me" option, you need to be looking at the sign in form - so, if you are currently logged in to your account, click on the "Account" menu in the top right corner of the page, and choose "Logout".
Here is a screenshot of the Facebook homepage as you should now see it:
First, type your full email address (user name) inside the "Email" text field; then, type your Facebook account password in the next field, and stop right there.
Before you click on the "Login" button or hit Enter (Windows & Linux) / Return (Mac OS X) on your keyboard, first check the "Keep me logged in" checkbox. When you successfully login to your Facebook account, and that checkbox was checked, Facebook will create a "cookie" on your computer, which will tell both the particular web browser you happen to be using, and Facebook, that you should be automatically signed in next time you visit the Facebook homepage (or any other page on the site, like someone else's profile page). A cookie is a tiny text file that contains basic information (in this case, your Facebook login settings), and that can be read by that browser only at a later stage.
Tip: cookies automatically expire after a certain period of time, and are deleted from your computer. The Facebook login cookie can also be deleted prematurely if you choose to manually clear your cookie cache - in practical terms, this would mean that the next time you visit Facebook, you'll have to manually sign in.
The answer is "No" - Facebook will remember either both your user name (email address) and password, or neither. This is normal, since Facebook needs both pieces of information to login to your account. For related information, see how you can make Facebook remember your email address.