| 摘要 |
PROBLEM TO BE SOLVED: To prevent illicit use of an electronic computer system integrated with an electronic computer and a network, to prevent illicit use of information, and to keep secrecy when an electronic recording medium and the computer itself are stolen. SOLUTION: The illicit use of the electronic computer is prevented by using an optional recording medium as a key. For example, in an enterprise, a system for easily preventing data duplication and browsing can be realized by limiting operation of a client electronic computer to access in a company, or prohibiting operation of the electronic computer itself when the electronic computer is stolen. |
