Type 1 authentication factor

Something you know, such as a password, personal identification number (PIN), combination lock, passphrase, mother’s maiden name, or favorite color.

Similar items:
Authentication that uses two or more factors of authentication. Multifactor authentication requires different factors (something you know, something you have, and something you are), not just multiple authentication methods in a single factor such as a password and a PIN, both in the something-you-know factor.
Token used in a token device that generates passwords at fixed time intervals. Time interval tokens require that the clock of the authentication server and the token device be synchronized. The generated password is entered by the subject along with a PIN, passphrase, or password.
A string of characters usually much longer than a password. Once the passphrase is entered, the system converts it into a virtual password for use by the authentication process. Passphrases are often natural-language sentences to allow for simplified memorization.
A number or code assigned to a person to be used as an identification factor. PINs should be kept secret.
(1) The process, generally employing unique machinereadable names, that enables recognition of users or resources as identical to those previously described to the computer system. (2) The assignment of a name by which an entity can be referenced. The entity may be high level (such as a user) or low level (such as a process or communication channel). Process an information system uses to recognize an entity. The process by which a subject professes an identity and accountability is initiated. The identification process can consist of a user providing a username, a logon ID, a PIN, or a smart card or a process providing a process ID number.

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