SAME INPUT INFORMATION BASED CONTACT INFORMATION EXCHANGE METHOD, AND CONTACT INFORMATION MANAGEMENT DEVICE, USER TERMINAL AND CONTACT INFORMATION APPLICATION WHICH IMPLEMENT SAME

摘要

A method for a contact information management device to enable contact information to be exchanged between users comprises the steps of: receiving a contact information exchange key from a certain terminal; setting, as a contact information exchange group, the certain terminal and terminals which have transmitted the same information as the contact information exchange key; and identifying users of the terminals included in the contact information exchange group and transmitting contact information of the identified users to each terminal included in the contact information exchange group.