Authentication information communication system and method, portable information processing device and program furnishing medium

A portable information processing device for executing communication with a service furnishing device through a human body, said portable information processing device includes

• a contact point A contacting the human body to establish a communication path through said human body;
• fixed data storage means for storing fixed user identification data capable of identifying a user;
• variable data storage means for storing variable user identification data corresponding to at least one of a plurality of services furnished by said service furnishing device;
• synthesizing means for synthesizing said fixed user identification data and said variable user identification data to create authentication data;
• and
• outputting means for outputting said authentication data to said service furnishing device, wherein said authentication data is used to determine a service to be furnished.

A method for authentication information communication executed by a portable information processing device including a contact point A adapted for establishing a communication path through a human body on having contact therewith and a service furnishing device including a contact point B adapted for establishing a communication path through a human body on having contact therewith, said method comprising:

• a step of transmitting service identification data from said service famishing device to said portable information processing device through said contacts B and A;
• a step of extracting variable user identification data stored in a variable user identification data storage means corresponding to said service identification data and extracting fixed user identification data stored in a fixed user identification data storage means;
• a step of generating data for authentication based on the synthesis of the variable user identification data and the fixed user identification data as extracted;
• a step of outputting said data for authentication from said portable information processing device to said service furnishing device through said contact points A and B;
• and
• a step of controlling service execution in said service furnishing device based on the results of authentication, wherein said data for authentication is used for determining a service to be executed.

In a system for authentication information communication executed by a portable information processing device having a contact point A adapted for establishing a communication path through a human body on having contact therewith and a service furnishing device having a contact point B adapted for establishing a communication path through a human body on having contact therewith, a program furnishing medium for tangibly furnishing a computer program which causes a processing executed on a service furnishing device to be executed on a computer system, said computer program comprising:

• a step of outputting service identification data from said service furnishing device through said contact point B to said portable information processing device;
• a step of receiving data for authentication generated by said portable information processing device based on synthesized fixed user identification data and variable user identification data corresponding to said service identification data through said contact point B;
• and
• a step of controlling the service execution based on the result of authentication processing, wherein said data for authentication is used to determine a service to be executed.

In a system for authentication information communication executed by a portable information processing device having a contact point A adapted for establishing a communication path through a human body on having contact therewith and a service furnishing device having a contact point B adapted for establishing a communication path through a human body on having contact therewith, a program furnishing medium for tangibly furnishing a computer program which causes a processing executed on a service furnishing device to be executed on a computer system, said computer program comprising:

• a step of receiving service identification data output from said service furnishing device to said portable information processing device through said contact out A;
• a step of extracting fixed user identification data from a fixed data storage means and variable user identification data corresponding to said service identification data from a variable user identification data storage means;
• a step of generating data for authentication based on a synthesis of the variable user identification data and the fixed user identification data as extracted;
• and
• a step of outputting said data for authentication from said portable information processing device to said service furnishing device through said contact point A, wherein said data for authentication is used to determine a service to be furnished.