Radio communication manner, the 2nd radio media whose maximum communication range is briefer than the radio communication

摘要

PROBLEM TO BE SOLVED: To improve a customer gathering effect and to avoid giving uncomfortable feeling to a user. SOLUTION: First, a radio communication part 114 transmits merchandise information. The part 114 receives a purchase request signal from the user existing within a 100 m radius of an automatic vending machine 201 and transmits it to a main control part 101. The part 101 holds all the purchase request signals which are already received, and transmits a radio medium switch signal for switching from the part 114 to an infrared communication part 115 to a switch part 116. The part 116 selects the part 115 and transmits a purchase confirming signal. The part 115 receives a purchase decision signal from the user facing the machine 201 and existing within a 1 m radius and transmits it to the part 101. The part 101 compares all the received purchase request signals and the earliest purchase decision signal to judge coincidence and specifies a portable terminal 202 for making it possible to sell a can beverage.