PURPOSE: To efficiently collect the charge in accordance with the actual use condition of the frequency of use, the time of use, or the like.

CONSTITUTION: A terminal equipment 10 is provided for each user, and a host computer 20 is provided for a presenter. Software is supplied to the user from a CD-ROM 41 through a delivery line 51, a cable 52, satellite broadcasting 53, etc. When the user requests the use of specific software, a cipher code of this software is given to the terminal equipment 10 from the host computer 20 after the adjustment processing based on the past use history is executed from the terminal equipment 10 to the host computer 20 through a telephone line 21. This code is given to a hardware device 30 to permit the use of software. After the use of software, the frequency of use and the time of use are recorded as the use history in the terminal equipment 10, and at the time of next line connection, the adjustment based on this use history is performed.