Mobile communication terminal having a function of reading out information from contactless type communication tag and method for providing information of whether an article is genuine or not

A method of managing product authentication service in a product authentication service management server that communicates with a subscriber server of a mobile communication company via a network and can communicate with a mobile communication terminal via a mobile communication network, the method comprising:

• receiving reading detail information including a product identification number assigned to each product whose tag is to be read and a reader identification number assigned to the mobile communication terminal from the mobile communication terminal;
• asking the subscriber server inquiry of subscriber information based on an identification number of the mobile communication terminal included in the reading detail information and receiving the subscriber information from the subscriber server;
• creating and storing customer management information including subscriber classification information and product information reading details based on the reading detail information and the subscriber information;
• and
• reading and outputting the customer management information in response to an information output request that is input from an external device.