| 摘要 |
<p>A method of protecting against impulse expenditure during an expenditure period includes the step prior to the commencement of the expenditure period, of using a digital information processing device to enter or select rules governing permissible expenditure during the expenditure period. During the expenditure period, expenditure controlling apparatus is used to control expenditure in accordance with the rules defined prior to the commencement of the expenditure period. The rules governing permissible expenditure are stored on a portable data storage device, and the portable data storage device is used to convey the rules to the expenditure controlling apparatus.</p> |
