The image forming device includes: an image data input unit that receives image data of a document; a set password acquisition unit that acquires information regarding a password from the image data received by an image data input unit; an image data input completion determination unit that determines whether or not all image data of the document is received by the image data input unit; an input password receiving unit that starts reception of input of the password, when the image data input completion determination unit determines that the image data input unit receives all image data of the document; a password verification unit that performs verification between an input password and a set password; and a job execution unit that cancels execution limit of a job based on a verification result to execute the job.