To provide a method for transferring electronic value information for a bulletin object, a tag and a system device for providing a service by using a bulletin object as a medium by electronically transmitting information carried on a bulletin object by using a tag capable of performing bi-directional communication, and issuing/receiving electronic value information associated with the bulletin object to the portable terminal of a customer.

This characteristic configuring means is provided with a bulletin object, a tag α having a control functioning part 1 for controlling the transmission/reception of data with a transmission/reception functioning part 4 capable of performing bi-directional communication, and for transmitting data designated from stored information based on the received data, an electronic value information issue/reception functioning part 2 for issuing or receiving the electronic value information under the control instruction of the control functioning part 1 and a power source part 3 for supplying a power to the control functioning part 1, a portable terminal for performing bi-directional communication with the tag and first and second second terminal equipment for performing communication with the tag 1 and the portable terminal.