Patent ID: 7668778
Filing Date: 2010-02-23
Classification: G06Q,G07F,H04L

Abstract:
1. A method for charging a fee for a service provided to a user device from a service provider device, the method comprising the steps of: receiving a charge collection request on a banking device which is transmitted from said service provider device; transmitting from the banking device to the user device a notice of a charge collection based on said charge collection request received from said service provider device; verifying on the banking device the validity of the charge collection based on said service request data and digital signature data when an objection to the fee from the user device is received; and calculating a correct value of the fee on the banking device based on the service request data when the validity of the charge is not confirmed, wherein, the charge collection request is based on a service request sent from the user device to said service provider device and said service request includes service request data, the service request data and the digital signature data for verifying validity of the charge collection are provided to the banking device via a removable storage device, constituted by hardware, which is connectable to a user terminal, the digital signature data is a function of the service request data, and information stored on the removable storage device cannot be modified.