What is Phone / Email Verification?
Email Verification (and Phone Verification, if you have a phone number on your account) is on by default. This is how we make sure it's really you signing in to your account. Whenever you sign in from a device we don't recognize, we'll send a verification code to your email address or phone number.
To bypass this step, you can choose to have us remember your device. We won't ask for a verification code when you sign in from a device that we remember.