| 摘要 |
PROBLEM TO BE SOLVED: To prevent any illegal use by making it difficult to guess an identification number by combining it with a password or a character. SOLUTION: When terminal equipment 5 transmits a keyword (KW) (A1), a KW management device 4 accepts the registration of KW (A2), and stores registered KW (A3), and an automatic payment device 3 inputs an identification number (A4), and transmits an input identification number (A5), and an identification number management device 2 accepts the authentication of the input identification number, and makes an inquiry to the KW management device 4 (A6), and the KW management device 4 transmits picture information to urge a user to input KW (A7), and the automatic payment device 3 inputs KW (A8), and transmits input KW (A9), and a KW management device 4 authenticates the input KW according to collation of the input KW and the registration KW stored in a registration KW storage part 43, and transmits authentication circumstances to an identification number management device (A10), and an identification number management device 2 transmits a normal task picture (A11). COPYRIGHT: (C)2007,JPO&INPIT |
