| 摘要 |
PROBLEM TO BE SOLVED: To provide a personal collation device capable of simply collating whether a person inputting a command is the same person identified by an identification(ID) code inputted from an ID code input device or not. SOLUTION: For a user identified by a user ID means 58, a transition probability determination means 62 determines 2nd command transition probability P2 from 1st command transition probability P1 calculated and stored by a 1st probability calculation means 56 as to a command chain stored in a 2nd command string storing means 60 and an average transition probability calculation means 64 calculates the average transition probability PAV of the 2nd command transition probability P2. A collation means 66 judges a command input by a valid user when the average transition probability PAV is larger than a lower limit threshold TH, and when it is smaller than the lower limit threshold TH, judges a command input by an invalid user. Consequently whether a person inputting a command is the same person as a user identified by a password or not can be simply collated. |
