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Setting a master password in Firefox for Android can prevent someone with your device from accessing your accounts. We'll explain how it works.

Firefox can save usernames and passwords that you use to access online services, such as banking and email. In order to prevent someone else from accessing your accounts if they have your device, you can set a master password. This article explains how to use a master password. ;[[Image:master_password0-ics]] __TOC__ = How does the master password work?= After you have defined a master password, you will be prompted to enter it when Firefox needs to access your stored passwords. This will "unlock" the usernames and passwords that you've saved and Firefox will automatically fill them in for you as you browse from website to website. When you are done using the web, you can quit Firefox to "lock up" your usernames and passwords. {note}'''Note:''' The Android system on your device may quit Firefox automatically to free up resources when you are using another app. If that happens, you'll be asked to enter your master password again when you switch back to Firefox.{/note} = How do I set up a master password? = By default, Firefox doesn't use a master password to protect your saved usernames and passwords. To set one up: {for not m25} #Tap the {button Menu} button [[Template:AndroidMenuLocation]] and then {button Settings} [[Template:AndroidMore]]. # Tap the {button Use master password} check box. #;[[Image:master_passwords-ics]] # Type a password into the entry fields. {note} '''Tip:''' Remember to make your password something that is easy for you to remember, but difficult for others to guess. See [[Choosing More Secure Passwords]] to learn how.{/note} # To set the master password, tap {button OK}. #;[[Image:master_password2-ics]] {/for} {for m25} #Tap the {button Menu} button [[Template:AndroidMenuLocation]] and then {button Settings} [[Template:AndroidMore]]. # Then tap {button Privacy} and choose {button Use master password}. #;[[Image:master_passwords-ics]] # Type a password into the entry fields. {note} '''Tip:''' Remember to make your password something that is easy for you to remember, but difficult for others to guess. See [[Choosing More Secure Passwords]] to learn how.{/note} # To set the master password, tap {button OK}. #;[[Image:master_password2-ics]] {/for} {note}When Master Password is enabled, passwords will stop syncing to Firefox for Android. {/note} =How do I remove a master password? = If you want to stop using a master password, you can easily remove it: {for not m25} # Tap the {button Menu} button [[Template:AndroidMenuLocation]] and then {button Settings} [[Template:AndroidMore]]. # Tap the {button Use master password} check box. # Type your master password into the entry field. # Tap {button OK} to remove the Master Password. {/for} {for m25} #Tap the {button Menu} button [[Template:AndroidMenuLocation]] and then {button Settings} [[Template:AndroidMore]]. # Then tap {button Privacy}. # Tap the {button Use master password} check box. # Type your master password into the entry field. # Tap {button OK} to remove the Master Password. {/for} {note}When Master Password is disabled, passwords will begin syncing again.{/note} = What can I do if I forget my master password? = If you've forgotten your master password, you'll have to reset it: {warning}'''Warning:''' Resetting your master password will remove all of your saved usernames and passwords.{/warning} # Delete Firefox for Android data from Android Settings. # The master password will be deleted and you'll be able to reset it.