Patent ID: 8831990

Claim:
Method for a payment transaction between a payer and a payee using (1) two communication devices respectively associated with data transmissions by the payer and the payee and (2) a processing unit, wherein a spatial proximity exists between payer and payee, and location information of the payer is transmitted and evaluated, the method comprising: the payer's communication device transmits data to the processing unit that contain a reference to a declaration of intent that is at least directed to conducting a payment transaction associated with money or value units; using the processing unit to derive a transaction data set and an identifier of the payer from the data transmitted by the payer, and to put, using the information on the location of the payer as an additional criterion, the transaction data set into a transaction pool, wherein a plurality of transaction data sets can be present in the transaction pool within a time frame of a predefined length; using the processing unit to determine whether uniquely correlating the transaction parties on the basis of a criterion using the identifier of the payer, and using the information on the location of the payer as an additional criterion, is possible because exactly one data set, and not more, with corresponding criteria is present in the transaction pool; and if it is determined that there exists exactly one transaction data set, and not more, with corresponding criteria, said transaction data set is selected and the payment transaction is conducted according to said selected transaction data set.