Two-factor authentication is a security
feature that helps protect your Facebook
account in addition to your password. If
you set up two-factor authentication, you’ll
be asked to enter a special login code or
confirm your login attempt each time
someone tries accessing Facebook from a
computer or mobile device we don’t
recognize. You can also get alerts when
someone tries logging in from a computer
we don’t recognize.
Note:
If you’re turning on two-factor
authentication for the first time from a
mobile device, you’ll be asked to turn on
text message (SMS) codes for
authentication.
If you don’t want to use this authentication
method, or you want to manage your
different authentication methods, you’ll
need to go to your Security and Login
Settings from a computer.
To turn on or manage two-factor
authentication:
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- Tap . Scroll to the bottom
and tap Settings.
- Scroll down and tap Security and Login.
- Scroll down and tap Use two-factor authentication.
- Tap the box next to Two-factor
authentication.
If you’ve successfully turned on two-factor
authentication for your Facebook account,
a checked box will appear next to Two-
factor authentication at the top of your
settings. There are several two-factor
authentication methods you can use with
your Facebook account when logging in
from an unrecognized computer or mobile
device. To get started with two-factor
authentication, choose either: Text message
(SMS) codes from your mobile phone.
Login
codes from a third party authentication
app. You’ll need to have at least one of
these set up in order to use two-factor
authentication. Once you have added
either text message (SMS) codes or a third
party authentication app on your account,
you’ll also be able to set up some of the
optional methods below: Approving your
login attempt from a device we recognize.
Using one of your recovery codes. Tapping
your security key on a compatible device.
Other Useful Resources If you haven’t
saved the computer or mobile device
you’re using, you’ll be asked to do so when
you turn on two-factor authentication. This
way you won’t have to enter a security
code when you log in again. Don’t click
Save this browser if you’re using a public
computer that other people can access
(example: a library computer). We need to
be able to remember your computer and
browser information so we can recognize it
the next time you log in. Some browser
features block this. If you’ve turned on
private browsing or set up your browser to
clear your history every time it closes, you
might have to enter a code every time you
log in.