User identification system and method

摘要

A service providing system using the biometrics identification without inputting the user ID poses the problem that the consideration of a service is erroneously claimed to the registered user not using the service due to the erroneous identification. According to this invention, the threshold of the value of the degree of similarity for user identification is set strictly for each registered biometrics information (603) of the user in accordance with the declaration of the loss caused by the erroneous identification.