Method and Device for Carrying Out Cashless Payments

A method for carrying out cashless payments by means of mobile telecommunications terminals, wherein each telecommunications terminal stores a subscriber identifier and a payment limit, which is assigned to said subscriber identifier, comprising the steps:

• generating a transaction code, which is specific to the payment transaction, using an algorithm,
• transmitting the transaction code to the mobile telecommunications terminal,
• transmitting the subscriber identifier, the transaction code and the payment limit from the mobile telecommunications terminal to a cash register system of the payment recipient in the context of a cashless payment transaction,
• comparing the transmitted payment limit to the desired payment amount in the cash register system,
• checking the validity of the transaction code in the cash register system using a verification algorithm stored in the cash register system,
• releasing the payment in the cash register system, if the following conditions are fulfilled:
• the desired payment amount lies within the payment limit and the transaction code is valid,
• storing the released payment in the cash register system for a later or immediate transfer to a payment processing center to initiate a debiting order, wherein the subscriber identifiers are stored in the payment processing center and a respective payment limit is assigned to each subscriber identifier, and the payment processing center transmits the payment limit to the mobile telecommunications terminal, wherein the payment limit, which is assigned to a subscriber identifier in the payment processing center, is reconciled with a stored payment limit, which is assigned to the respective subscriber identifier in a banking network, wherein a payment limit, which was changed after a reconciliation is transmitted to the mobile telecommunications terminal, which corresponds to the subscriber identifier, together with a new transaction code.