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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. {for =m4,=m5,=m6,=m7} [[T:ApplytoFx|version=8 for mobile|slug=mobile]] {/for} {for =m8,=m9,=m10,=m13} [[Image:masterpassword0-mobile]] {/for} {for m14} [[Image:master_password0]] {/for} __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} {for =m8,=m9,=m10,=m13} = 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: # Swipe left and tap the {button Gear} button. # If you're not already on the Preferences screen, tap the Preferences tab at the top of the window. # Scroll down to the Privacy & Security preferences and tap the Use Master Password check box.<br><br>[[Image:masterpassword1-mobile]] # 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}[[Image:masterpassword3-mobile]]}<br/> # To set the master password, tap {button OK}. =How do I remove a master password? = If you want to stop using a master password, you can easily remove it: # Swipe left and tap the {button Gear} button. # If you're not already on the Preferences screen, tap the Preferences tab at the top of the window. # Scroll down to the Privacy & Security preferences and tap the Master Password check box. # Type your master password into the entry field.<br><br>[[Image:masterpassword4-mobile]] # Click {button OK} to remove the Master Password. {/for} {for m14} = 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: # Tap the hardware {button Menu} button and select Settings. # Tap the Use Master Password check box.<br><br>[[Image:master_passwords]] # 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}[[Image:master_password2]]<br/> # To set the master password, tap {button OK}. {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: # Tap the hardware {button Menu} button and select Settings. # Tap the Use Master Password check box. # Type your master password into the entry field. # Click {button OK} to remove the Master Password. {note}When Master Password is disabled, passwords will begin syncing again.{/note} {/for} = 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 the Google Settings application. # The master password will be deleted and you'll be able reset it. [[Template:ShareArticle|link=http://mzl.la/SVtPzw]]