Process executing system, information processing system, information processing method, and recording medium for detecting duplicate image data from a same output material

An information processing method performed by a process executing system that receives image data of an output material from an apparatus and processes the output material, the method comprising:

• a step of transmitting, by a communicator, to the apparatus, output data of the output material including identification information of the output material and identification information of a user operating the apparatus;
• a step of receiving, by the communicator, image data generated by reading the output material by the apparatus, the output material being the output data printed by the apparatus;
• and
• step of detecting, by a duplication detector, a generation of the image data from a same output material as the output material, based on the identification information of the output material and the identification information of the user attached in the image data received by the communicator.

A non-transitory recording medium storing a program to cause an information processing system to function as:

• a communicator configured to transmit, to the apparatus, output data of the output material including identification information of the output material and identification information of a user operating the apparatus,
• the communicator configured to receive image data generated by reading the output material by the apparatus, the output material being the output data printed by the apparatus;
• and
• a duplication detector configured to detect a generation of the image data from a same output material as the output material, based on the identification information of the output material and the identification information of the user attached in the image data received by the communicator.