| 摘要 |
The present invention provides a method comprising: (a) if a server receives an authentication request signal from a personalized electronic terminal of a user, the server comparing a human relation information set, obtained from the personalized electronic terminal of the user, with a human relation information set for each user prestored at a database, wherein the obtained human relation information set includes at least a portion among identification information on acquaintances of the user, the identification information includes information to discriminate the acquaintances from other people, and the human relation information set for each user prestored at the database indicates information on at least a portion of what is grouped for each user in a state that the human relation information is grouped for each user; and (b) based on the comparison result, the server authenticating the user of the personalized electronic terminal. The present invention authenticates the user by using the human relation information of the user though not receiving authentication information, such as an ID and a secret number, from the user, thereby authenticating the user without taking a risk of the user forgetting the ID or the secret number and exposing the ID or the secret number to other people. |
