
Using two-factor authentication helps ensure that the accounts associated with your Apple ID are safe. Even if someone has your login name and password, they won't be able to access your accounts without a verification code from a trusted phone number or one of your trusted devices. Once you verify a new device, you won't need to use two-factor authentication again unless you sign out of it completely, erase your device, or change your password. Similarly, when signing in on the web, you can choose to trust that browser so that you don't have to go through the verification process each time you sign into your account on your computer. Let's go over the steps of signing in to a new device or iCloud account with two-factor authentication.