Literally the first paragraph: > Last year we added two-factor authentication to provide another layer of protection for your 1Password account. When this is e

Literally the first paragraph: > Last year we added two-factor authentication to provide another layer of protection for your 1Password account. When this is enabled, you are prompted to enter your second factor any time you sign in from a new device. If you read it carefully, you'll have the answer to your question.