Authentication apparatus and method, network system, recording medium and computer program

摘要

An authentication apparatus that makes it difficult to perform posing when accessing information is provided. When there is an access request from a mobile phone, an authentication server transmits a program to the mobile phone (S 3202 ). The program is for reading data regarding an individual number (for example, serial number) recorded in a scratch pad of the mobile phone, and transmitting the data to the authentication server. The authentication server that receives the data regarding the serial number transmitted by activation of the program (S 3202 ) compares the serial number with data regarding the identification number of each mobile phone, the data being maintained in the authentication server (S 3203 ). When the serial number matches any of serial numbers maintained therein (S 3203 : Yes), the authentication server authenticates the access to be valid.