IC card automated transaction terminal and IC used therein

An IC card, for performing a commercial transaction by inserting said IC card into a terminal, comprising:

• a storage area for storing a plurality of balances of points given by a plurality of shops;
• and
• a processor which updates said balances of points according to an instruction from said terminal;
• wherein said storage area stores a plurality of shop numbers to identify each shop, and said processor updates a balance of points corresponding to a shop number;
• and
• wherein said storage area stores point adding rates with said shop numbers, and said balance of points is based on said point adding rate.

An IC card terminal, for performing a commercial transaction by inserting said IC card into a terminal, comprising:

• a storage area for storing a plurality of balances of points given by a plurality of shops;
• and
• a processor which updates said balances of points according to an instruction from said terminal;
• wherein said storage area stores a plurality of shop numbers to identify each shop, and said processor updates a balance of points corresponding to a shop number;
• and
• wherein said IC card stores a level of service with said shop number, and said processor updates a point balance based on said level of service.

An IC card for storing sum information and for performing a commercial transaction by inserting said IC card into a terminal and updating said sum information, comprising:

• first storage area for storing a first balance;
• a second storage area for storing a second balance;
• an ID storage area for storing an identification number;
• and
• a processor for updating said first and second balances stored in said first and second storage areas according to an instruction from said terminal,
• wherein:
• said first balance and said second balance are both balances of sums of electronic money, and
• said processor updates said first balance in said first storage area without inquiring for said identification number, and
• said processor updates said second balance in said second area, and
• said identification number is inquired for each time before said processor updates said second balance, and
• wherein said first balance has a predetermined upper limit on the amount of electronic money that can be stored in the first storage area which is less than an amount of electronic money that can be stored in the second storage area.

An IC card terminal for performing a commercial transaction by updating sum information stored in an IC card which has a first storage area storing a first balance of electronic money, a second storage area storing a second balance of electronic money and an ID storage area which stores an identification number, comprising:

• an input device for inputting an instruction in relation to a transaction;
• an IC card reader/writer for reading and writing said first and second balance from/to said IC card;
• and
• a processor for subtracting a sum of transaction from said first balance in said first area without inquiring for said identification number and for subtracting a sum of transaction from said second balance in said second area after inquiring for said identification number,
• wherein said first balance has a predetermined upper limit on the amount of electronic money that can be stored in the first storage area which is less than an amount of electronic money that can be stored in the second storage area.

An IC card for storing sum information and for performing a commercial transaction by inserting said IC card into a terminal and updating said sum information, comprising:

• a storage area for storing a balance of electronic money;
• an ID storage area for storing an identification number;
• and
• a processor for updating said balance stored according to an instruction from said terminal, wherein:
• said identification number is inquired for once within a plurality of times before said processor updates said balance if a sum of a transaction is equal to or smaller than an predetermined upper limit sum, and
• said identification number is inquired for each time before said processor updates said balance if a sum of a transaction is larger than said predetermined upper limit sum.

An IC card terminal for performing a commercial transaction by updating sum information stored in an IC card which has a storage area for storing a balance of electronic money and an ID storage area for storing an identification number, comprising:

• an input device for inputting an instruction in relation to a transaction;
• an IC card reader/writer for reading and writing said balance from/to said IC card;
• and
• a processor for subtracting a sum of transaction from said balance in said IC card if a sum of a transaction is equal to or smaller than a predetermined upper limit sum after inquiring for said identification number once with a plurality of times, wherein said processor subtracts sums of transactions at other times within said plurality of times without inquiring for said identification number if the sum of the transaction is equal to or smaller than said upper limit sum, and for subtracting a sum of transaction from said balance in said IC card if a sum of a transaction is larger than said upper limit sum only after inquiring for said identification number each time a transaction is larger than said upper limit sum.