Patent ID: 8073257

Claim:
An information processing system comprising: an input unit for inputting image data on which an image processing job for causing execution of an image output process is to be performed; a verification data generator for generating verification data based on the image data; a log data generator for generating log data to be associated with the verification data; a storing controller for storing, in at least one storage unit, the verification data and the log data to be associated with the verification data; a verifying unit for determining a verification result based on whether the storing controller has stored the verification data in the at least one storage unit, wherein the verification result is positive if the verification data is stored in the at least one storage unit and the verification result is negative if the verification data is not stored in the at least one storage unit; and a controller for causing execution of the image output process based on the image data in response to the verification result being positive, and for causing execution of the image processing job to be terminated without causing execution of the image output process based on the image data in response to the verification result being negative.