| 摘要 |
PROBLEM TO BE SOLVED: To prevent a third party having no rightful authority from opening a casing of a device so as to steal data. SOLUTION: A screw is formed with a contact or the like detecting detachment thereof. By the contact, when it is detected that the screw or the like of the casing is in the middle of the detachment, an image requiring input of a password is displayed. When the password is inputtde and when the inputted password is not rightful, a program and data stored in a memory or the like inside the device are forcibly deleted. Operation of the device itself is also stopped. COPYRIGHT: (C)2004,JPO |
