An image scanning method includes: generating, in a terminal, a scan job ticket as a data file containing content of a job for storing scan data, generated by image scanning, in a storage; based on the content of the job, generating, in an image scanning apparatus, a scan send ticket as a data file for sending the scan data; transmitting the scan job ticket from the terminal to the image scanning apparatus; in response to the receiving of the scan job ticket, authenticating, in the image scanning apparatus, the scan job ticket based on authentication information in the scan send ticket; and in response to the authentication, storing the scan data in the storage according to the content of the job.