PAYMENT TRANSACTION CLIENT, SERVER AND SYSTEM

摘要

The invention relates to a system for handling payment transactions, comprising a payment transaction client and a payment transaction server. A customer identifies himself by providing a code to a shop, preferably by a bar code. The shop sends customer identification, shop identification, client identification and the amount to the server. The server looks up further customer information, checks the balance on the account of customer and issues a payment confirmation code to the mobile telephone of the customer if the customer has enough credit on the account. The customer provides the code to the shop or directly to the client, upon which the client sends the payment confirmation code and further information like the information sent previously to the server. If the confirmation code received matches the confirmation code issues early, the server executes the payment or instructs a bank to execute the payment.