A verification code is a numeric or alphanumeric code that is texted or emailed to users or sent to a second device to verify the identity of someone logging in to an account. Verification codes are widely used as a second authentication factor.
Understanding the Term
Most web services today allow users to obtain two-factor authentication by registering their phone as an additional means of identification. To log on to a site offering this service, a user must first enter their username and password.
Then, a text containing a verification code is then sent to their phone, which then has to be entered to gain access. This means that even if a password is guessed, hacked, or stolen, the account can only be accessed by someone in possession of the user’s phone.
Verification codes help to add an extra layer of security during the account access process or procedure.