| 摘要 |
PROBLEM TO BE SOLVED: To provide a FAX information supply device that can prevent others from knowing the entirety of a password at a time, make it more difficult for others to know the password and also enable a normal user to know unauthorized use of services by others when the others use the services unjustly. SOLUTION: A password used by a user for an access to an information supply system comprises a fixed portion at which the user inputs the same value every time the user accesses and a variable portion at which the user inputs a value varying every time the user accesses. A second portion of a password which will be used by the user for a next access to the information supply device is generated, and both the second portion thus generated and supply information are transmitted to the user. |
