| 摘要 |
<p>PURPOSE:To prevent leakage of information by providing a storage section storing a terminal telephone number of a telephone line in an electronic computer system to allow the said terminal to acquire or operate specific information. CONSTITUTION:The electronic computer system 1 reads a terminal telephone number of a terminal 8 from a terminal telephone number storage section 9 first and reads an index telephone number corresponding to the specific information registered in advance from an index telephone number storage section 10. Then the read terminal telephone number and the index telephone number are compared and when they are coincident, the acquisition or operation of the specific information of a specific information storage section 11 is permitted to the terminal set 8. In the case of dissidence, whether or not the next index telephone number exists in the index telephone number storage section 10 is checked, and in the case of the presence of the next index telephone number, the similar operation is repeated. In the case of the absence of the next index telephone number, the acquisition or operation of specific information of the specific information storage section 11 is inhibited or the terminal set 8.</p> |
