USER TERMINAL IN WHICH AUTHENTICATION APPLICATION IS INSTALLED, METHOD FOR OPERATING AUTHENTICATION APPLICATION, AND METHOD FOR OPERATING SERVER

摘要

Disclosed is a method for operating an authentication application installed on a user terminal. One embodiment comprises: extracting uniquely attributed identification information from a received sound wave, which has been transmitted from an electronic stamp; confirming whether the identification information is present in an identification information list; receiving at least one touch event, which has been generated by bringing into contact the electronic stamp with a touch interface; and visually displaying, on a display of the user terminal, a predetermined authentication item corresponding to an identification result generated based on the touch event, when the identification information is present on the identification information list.