Method and arrangement for paying electronically for a goods item or service, in particular an application in a data network

摘要

Method for paying an amount electronically, in particular a relatively large amount or a series of very small amounts for use of an application made available by a service provider in a data network, in particular the Internet, by a customer to a trader by involving a payment system server of a payment system provider, the payment being carried out by transmitting a confirmation message from a customer terminal via a mobile telephone network using USSD.