The 1Password Secret Key is an encryption key made up of 34 letters, numbers and symbols. For more on 1Password's security features, see their articles on Security and Privacy and their security certifications.
1Password uses bank-grade Advanced Encryption Standard (AES) 256-bit encryption technology and includes a wide variety of security features to keep passwords safe. Member accounts on 1Password are umbrellaed under ArtsPool's business account so members are not billed for their use of 1Password unless they decide to have more than one user account.
Adding passwords from the browser extension.