2FA (Two-Factor Authentication)

2FA or Two-Factor Authentication is a security process in which the user provides two means of identification, one of which is typically a physical token, such as a card, and the other of which is typically something memorized, such as a security code. Two-Factor Authentication gives users an extra layer of security when accessing their online accounts. In addition to a typical combination of username and password, a second 'factor' is added, such as a numeric code displayed on a trusted device, to heighten the certainty that you are the one attempting to access your account. 2FA is a method of determining a user's identity by confirming two factors among 1) something the user knows (i.e. mother's maiden name), 2) something the user has (i.e. mobile phone) and 3) something the user is (i.e fingerprint). 2FA is a subset of the broader multi-factor authentication (MFA).