what is a verification code

A verification code is a numeric or alphanumeric code that is used to verify the identity of a user. It is commonly sent via text or email, or displayed on a trusted device, to provide an additional layer of security during the login process. Verification codes are widely used as a second authentication factor, especially in two-factor authentication systems. These codes help prevent unauthorized access by requiring users to enter the code in addition to their username and password. They are used to protect personal information and to avoid Internet robots from abusing and spamming web forms.