Individual certification method

The present invention provides a safe and quick individual authentication method using a mobile terminal. When authentication is demanded from a mobile terminal to an authentication server , the authentication server transmits verification code for authentication to the mobile terminal . The mobile terminal returns the verification code through a sales management server via a reader or the like to the authentication server for authentication. The authentication server verifies the returned verification code to the verification code previously generated, and returns a result of the verification and personal data required by the sales management server to the sales management server