Information providing server, communication terminal, control method therefor, and information providing system

摘要

This invention discloses a server apparatus which can prevent direct reference to information that should be referred to only after a predetermined procedure, and a control method for the apparatus. The server apparatus of this invention analyzes address information contained in an information reference request and checks whether the address information contains system time added by the information server. If the system time is contained, it is compared with the current system time. Only when the difference between them has a predetermined value or less, the address information is determined as valid.