Methods and devices for carrying out user authentication

A cellular terminal comprising

• a communication unit for carrying out communication with others via a first network;
• and
• a controlling unit, by carrying out communication, via said first network and a second network being connected with the first network, with a server in the second network by said communication unit, for reading out personal identification information from memory installed in the cellular terminal or a memory connected with the cellular terminal, and transmitting the personal identification information to said server via said connection, when data containing a specific data string is received from the server.

A program causing a computer to execute:

• a process of reading out personal identification information from memory installed in the cellular terminal or memory connected with the cellular terminal, and transmitting the personal identification information to said server by said communication unit by carrying out communication, via a first network and a second network being connected with the first network, with a server in the second network by a communication unit, when data containing a specific data string is received from the server.

A recording medium storing:

• a program for prompting a computer to execute a process of reading out personal identification information from memory installed in a cellular terminal or memory connected with the cellular terminal, and transmitting the personal identification information to said server by said communication unit by carrying out communication by a communication unit, via a first network and a second network being connected with the first network, with a server in the second network when data containing a specific data string is received from the server.