Abstract: A press key structure comprises two first plates disposed between a casing and a circuit board, wherein one side of each first plate is exposed to the outside of the casing, the other side thereof faces the circuit board and includes a groove, and each of the grooves includes a trigger module disposed at the position corresponding to a first triggering portion on the circuit board, and a second plate includes a pressing portion and two elastic connecting portions, wherein the elastic connecting portions are disposed at two ends of the pressing portion at the positions corresponding to the two first plates respectively, a surface of the pressing portion is exposed to the outside of the casing, the other surface thereof faces a second triggering portion on the circuit board, and the two elastic connecting portions are respectively accommodated in the grooves so as to place the pressing portion at the position between the two first plates and extend the other ends of the elastic connecting portions out from the

Abstract: An electronic commerce system is built between a vending machine and a communication device that permits information exchange through a network, wherein the vending machine includes a first wireless information transceiver coupled to a control system of the vending machine, and the communication device includes a second wireless information transceiver corresponding to the first wireless information transceiver and an electronic commerce software for performing the steps of receiving a transaction request information by the communication device; sending the information by the communication device to the network through the second wireless information transceiver; sending the information by the network to the first wireless information transceiver, and analyzing the information by the first wireless information transceiver to produce a purchase message; and sending the purchase message by the first wireless information transceiver to the control system, and releasing a merchandise stored in the vending machine