Two-Step Verification
Give your account an increased level of security by opting into two-step verification (also known as "two-factor authentication" or "2FA").
When you opt in, you will receive a unique code via email each time you attempt to sign in that you will need to enter to complete sign-in.
Important: You must be able to access the email account with which you are attempting to sign in.
Activate/deactivate it in your Account Settings.