To solve the problem of failing to operate a system if a fingerprint database is destroyed by some cause or a fingerprint data server is not operated in a conventional fingerprint database constituted to carry out collation processing only with the fingerprint data 54 of one fixed fingerprint database and further causing the situation that authentication time becomes long if the fingerprint data increases.

The fingerprint database is not put on one fingerprint data server but set to a plurality of parts to disperse fingerprint data 54, and authentication processing can be performed with each fingerprint data 54. This constitution is effective in shortening authentication time. With the fingerprint data server multiplexed, if one fingerprint data server is working, the system is not affected, and the operation rate of the system can be heightened.