Confirming field technician work based on photographic time and location device

摘要

Provided is an information processing system, and the like, with which even if target information that relates to a target of interest has been disguised, such disguising can be more accurately detected, and the appropriate information intended for presentation to a user can be presented according to the detection results. An information processing system is equipped with: a server apparatus which determines whether or not target information is authentic, on the basis of a determination condition and information from which target information relating to a target of interest has been created and which indicates at least a time/date and a first location and a client which controls a presentation unit such that presentation information intended for presentation to a user is presented according to the result of the determination made by the server apparatus.