Disclosed is an image forming apparatus that include a personal identification method acquisition unit that extracts an identification method for identifying an operator from a first image scanned by an image scanning unit; a verification information extraction unit that extracts verification information with respect to personal identification information of the operator from the first image; a personal identification information acquisition unit that acquires the personal identification information in accordance with the identification method; a verification unit that verifies the acquired personal identification information with the verification information; and an authentication unit that authenticates the operator based on authentication information of the operator extracted from the first image when the personal identification information matches with the verification information.