Abstract: A processor in a first portable terminal of a first user advertises an advertising signal including a unique service identification code and a randomly generated identification code and displays a two-dimensional code corresponding to a randomly generated identification code based on profile information of the first user on a screen of the first portable terminal. A processor in a second portable terminal of a second user specifies the first portable terminal of an exchange partner by reading the two-dimensional code displayed on the screen of the first portable terminal and determining coincidence with the received randomly generated identification code, and exchanges the profile information.

Abstract: A processor in a first portable terminal of a first user advertises an advertising signal including a unique service identification code and a randomly generated identification code and displays a two-dimensional code corresponding to a randomly generated identification code based on profile information of the first user on a screen of the first portable terminal. A processor in a second portable terminal of a second user specifies the first portable terminal of an exchange partner by reading the two-dimensional code displayed on the screen of the first portable terminal and determining coincidence with the received randomly generated identification code, and exchanges the profile information.