One key feature of 1Password is the use of a secret key in addition to a master password. See page 10 [1] which explains how the secret key provides extra entr

One key feature of 1Password is the use of a secret key in addition to a master password. See page 10 [1] which explains how the secret key provides extra entropy (which makes it much harder to brute force a user who choses a weak password). Also see Story 1 on page 11 [1]. [1] https://1passwordstatic.com/files/security/1password-white-paper.pdf https://1passwordstatic.com/files/security/1password-white-p...