Communication type navigation system

摘要

A communication type navigation system includes an information server provided on the Internet, and a user terminal connected to the information server. The user terminal device includes a display unit which displays information received from the information server; a current position detection unit which detects a current position of the user terminal device; and a communication unit which transmits the current position of the user terminal device to the information server and receives a piece of electronic mail transmitted from the information server. The information server includes an information retrieval unit which performs information retrieval relating to a predetermined area around the current position of the user terminal device; and an electronic mail transmission unit which generates a piece of electronic mail that supplies results of retrieval by the information retrieval unit to the user terminal device and transmits the piece of electronic mail to the user terminal device.