DESK GUARD Choi, Minaa(Seoul National University, Korea), (choiminaa@hotmail.com) Today's students use more and more valuable things to study, notebook, mp3 player, recorder, cell phone, etc. Therefore, it becomes difficult to leave them unattended even for a moment. Just for a little break, students studying in a library have to carry his belongings or return a few minutes later. A waste of time that could be corrected by a simple and ingenious system 'Desk Guard'.