| 摘要 |
PURPOSE:To surely keep the security of an information processing system by using a means which displays at random one of those pairs of several types of personal identification numbers registered in a dictionary and inputs the corresponding identification number to decide a qualified person. CONSTITUTION:When an operator inputs a personal code via a tablet 6, the recognizing result of the relevant pattern is stored in a memory RAM. Then an inputted user's identification number is retrieved out of a register dictionary 3. On the basis of this retrieved identification number, a CPU selects at random one of several types of identification numbers out of the dictionary 3 and outputted to a CRT memory. Then the operator inputs again the identification number paired with that outputted to a CRT through the tablet 6. This inputted identification number is recognized by a recognizing part 5 and inputted to the memory RAM. A dictionary comparison part 2 decides whether or not the recognizing result of the part 5 is paired with the identification number outputted to a CRT 8. |
