To specify a pertinent person when the number of visitors becomes a prescribed number in an entrance system using the short distance radio communication function of a portable telephone set.

The portable telephone set M transmits an ID number through an automatic ticket examination machine 2 to an event place server 3. The event place server 3 sums up the number of the visitors based on the received ID number, discriminates whether it is winning or losing depending on whether or not the cumulative value matches with the winning number of the visitors, stores the discriminated result in a winning result management table 70 based on the ID number and transmits the stored ID number and information for indicating whether it is the winning or the losing through the automatic ticket examination machine 2 to the portable telephone set M. The portable telephone set M performs the guidance display of the winning or the losing based on the information for indicating whether it is the winning or the losing matched with its own ID number.