| 摘要 |
PURPOSE: A login authentication method using a call number without any SMS(Short Message Service) charge is provided to prevent a delivery delay by removing need for transferring an authentication phone number through a text message. CONSTITUTION: It is checked whether an ID and a password received from a client are normal(S200,S205). If the ID and the password are normal, an account is kept in a blocking state(S215). The authentication phone number is displayed to the client(S217). An originating phone number calling to the authentication phone number is extracted(S220). The originating phone number is compared with the phone number stored for the ID(S225). If the originating phone number and the stored phone number are identical, the blocking state is released(S230,S235). If the originating phone number and the stored phone number are not identical, a login state is compulsorily logged off(S250). |
