METHOD FOR SELLING COMMODITY BY USING SECURITY SYSTEM

PURPOSE: A commodity sale method is provided to enable security cameras, installed at a department store or a discount store, to access the internet and to offer images of the displayed commodities to customers at remote locations. CONSTITUTION: The method comprises steps of displaying positions of target stores at a map of a web page by using a GIS(Geographic Information System) and a communication network(S1-S2), displaying various items for guiding a sale on a web page in case that a customer selects one store(S3-S4), displaying images of commodities taken by the cameras installed at the store in the case that the customer selects one specific item on the web page(S5-S8), and displaying the images of the commodities taken by the camera held by a shop assistant, connecting the customer to a consultant over a voice communication line, giving an answer to the customer's question or helping the customer to determine a purchase price or a payment method in the case that the customer selects a connection to the shop assistant(S9-S11).