| 摘要 |
PURPOSE:To surely prevent an application program loaded a memory from illegally being used by a 3rd party. CONSTITUTION:The memory 4 holds the loaded application program even while the computer is powered off. When a user writes 2 sign on an input tablet 10 by using a pen 11 when the power source is turned on, a sign certifying mechanism 8 collates the features of the inputted sign with features stored in a nonvolatile feature storage part 85 to certify the sign. When the sign matches, the application program loaded on the memory 4 is allowed to be executed, but when not, the application of the sign which is inputted this time if the sign does registration of the sign which is inputted this time if the sign does not match, the features of the sign which is inputted this time are saved in the feature storage part 85 and then the application program in the memory 4 is cleared. |
