| 摘要 |
<p>The invention consists of the fact that the inputting of a request for a transaction and the logging-in of a user to an authorisation headquarters is preformed through a first public network, from the request for a transaction the authorisation headquarters generates an authorisation code and sends it off to the user through a second public network, the user following receipt of the authorisation headquarters by means of the first public network and the authorisation headquarters in the case of a match of the sent and received authorisation code issues the instruction for execution of the transaction. The authorisation headquarters in generating the code supplements the request for the transaction with at least one variable datum, this preferably being a time datum. From the point of view of costs for realisation of the solution it is advantageous where the first public network is the Internet network and the second public network is a mobile telephone network or paging network or RDS network.</p> |
