Wireless information service system using bar code and method therefor

A system and method for providing information services using a bar code at a wireless terminal, which is capable of receiving a variety of information services including user authentication through a network by receiving a bar code from a wireless terminal over the Internet and reading the transmitted bar code from a bar code system of a member store. The bar code system is constructed such that various services may be offered through a bar code system associated with a bar code issue server using a bar code transmitted to the wireless terminal through the Internet. Accordingly, the information service system and method are provided for various on line business services while not substantially modifying conventional bar code systems. Also, a bar code service can be offered through the wireless terminal, thereby allowing for excellent mobility compared with the conventional bar code system. Additionally, a marketing database for integrally managing information through a single bar code issue server can be provided. Moreover, an enterprise can easily handle various authentication procedures through an on line network.