Research of Anti-Copy and Plagiarism Monitoring System

The function of current multimedia instruction monitor system is only limited to essential teaching activity. It uses mostly dasiascreen surveillancepsila to monitor the student computer, and limit their activity by locking the screen. But it could do nothing for ones who copy files through network neighbor or mobile storage media which could be done within minutes or even seconds. It is also useless when student escape monitor by unplugging network connection line. In this article, an effective solution is given which is based on windows Hook and multithread technique. Using Hook track the keyboard and mouse operation; extract and examine the characters of the focused-on window and mobile storage media using information obtained from the tracking. Stop the message transmitting for the operation suspected of copying, or clear the clipboard to invalidate the operation of copying. For the user who unplugged the network connection line for escaping monitor, freeze the screen, lock the keyboard immediately. When the network connection restored, defreeze the screen and unlock the keyboard automatically. So, that becomes offline intelligent monitor. This article gives a brief description of the system design and detail of the algorithm, which is used in the practice of instruction. It is proved from both theory and practice that the technical solution is advanced and reliable, it fills up the blank of the anti-copy and plagiarism in multimedia instruction monitoring system.