What is Verification Code?

A verification code is a digitally generated code that is typically sent to a user's email account, mobile device, or computer in order to ensure the validity of a login attempt. Verification codes are generally sent via email, text message, or obtained via two-factor authentication (2FA) services like Google Authenticator which can randomly generate a six-digit number every 30 seconds using a Time-based One-Time Password (TOTP) algorithm or a HMAC-based One-Time Password (HOTP) algorithm.