What is Login Approvals in Facebook and How to Turn it On?

Login Approvals is an opt-in security feature similar to Login Notifications, but with an extra security step. With Login Approvals, each time you try to access your Facebook account from an unrecognized device (ex: any computer or mobile phone you haven’t named and saved to your Facebook account), you will first have to enter a security code we’ve sent to your mobile phone.

To turn on Login Approvals:

1. Go to your Security Settings page (Account > Account Security > Security)
2. Click on the Login Approvals section
3. Check the box and save your changes

Note:

• If you don’t have a mobile phone number linked to your Facebook account, you will need to add one. Follow the steps provided when you check the box to turn on Login Approvals.
• If you are haven’t named the device you are on, you will be prompted to do so when you turn on Login Approvals. Do not click the Save this device option if you are using a public device (ex: a friend’s phone, a library computer).
• You can view and edit the list of devices linked to your Facebook account from theRecognized Devices section of your Security Settings page.
• After you turn on Login Approvals, we need to be able to remember your computer and browser information so we can recognize it 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.

To turn on Login Approvals:

1. Click the account menu  at the top right of any Facebook page
2. Choose Account Settings
3. Click on the Login Approvals section
4. Check the box and save your changes

Note:

• If you don’t have a mobile phone number linked to your Facebook account, you will need to add one. Follow the steps provided when you check the box to turn on Login Approvals or learn more.
• If you are haven’t named the device you are on, you will be prompted to do so when you turn on Login Approvals. Do not click the Save this device option if you are using a public device (ex: a friend’s phone, a library computer).
• You can view and edit the list of devices linked to your Facebook account from theRecognized Devices section of your Security Settings page. [source]