Authentication factors, sometimes referred to as security factors, or simply factors, are a method that a person can use to verify a person’s identity. Most logins only use one factor, which usually consists of a password. As security and technology improve, two-factor authentication has begun to rise in popularity. Two-factor authentication, as the name suggests, uses two security factors to verify one’s identity.
There are three main authentication factor types, which are knowledge, possession, and inheritance factors, which are occasionally referred to as “things you know”, “things you have”, and “things you are”, respectively.