NETWORK SYSTEM AND COMMUNICATION METHOD IN NETWORK SYSTEM, PORTABLE TERMINAL AND COMMUNICATION PROGRAM OF PORTABLE TERMINAL, INFORMATION PROVISION SYSTEM AND INFORMATION PROVISION PROGRAM, AND MANAGEMENT SERVER AND COMMUNICATION PROGRAM OF MANAGEMENT SERVER

摘要

PROBLEM TO BE SOLVED: To realize a network system for determining and transmitting advertisement information depending on peripheral conditions such as people around a display without unfairly obtained personal information.SOLUTION: A network system connects an information provision system, a portable terminal, and a management server storing user information of the portable terminal, through a data communication network. The information provision system transmits guidance information on service content to be provided by radio communication means to a prescribed range. The portable terminal determines whether personal information to be provided to the information provision system needs to be newly generated on the basis of the received guidance information, and requests the management server to transmit the personal information to the information provision system on the basis of a result of the determination. The management server transmits passer-by information generated on the basis of the transmission request information and the user information, to the information provision system. The information provision system outputs output data in an output format determined on the basis of the received passer-by information.