FAMILY ACCOUNT SYSTEM, ELECTRONIC CHECK SYSTEM, ELECTRONIC DEALING SYSTEM, INPUT/OUTPUT TERMINAL DEVICE, PAYMENT DEVICE, AND SITE OPERATING DEVICE, GOODS RECEIPT CONFIRMATION DEVICE, AND ELECTRONIC DEALING RESERVING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a system which totally manages family's financial dealings while promoting electronic dealings by check with high safety. SOLUTION: An electronic check is issued in real time and a financial institution that a user has dealings with and a financial institution that a payee has dealings with mutually authenticate and issues the electronic check whose payee, payment amount, payment conditions, etc., are determined. Thus, the electronic check is issued in real time, so the user can request an account managing device 6 of the financial institution to issue the check by radio, etc., on the spot by having a short-distance communication with a payment device 9, etc., through a portable input/output terminal device 1. Further, an account managing device 6 manages accounts and financial dealings, family by family, to provide household account books, etc., for the users.