FIELD: payment structures, circuits and protocols.
SUBSTANCE: invention relates to methods for conducting transaction. Method comprises receiving, in a payment application installed on payment device, transaction data relevant to payment transaction, which is carried out between user payment device and retailer, transfer via an interface, which connects payment application with application of additional functions, installed on payment device, of an instruction which prompts application of additional functions to provide data of additional functions, relevant payment transaction data via an interface, transmitting additional functions, relevant payment transaction, from application of additional functions in payment application, data transmission of additional functions together with payment data from payment application merchant.
EFFECT: technical result is faster transactions owing to possibility of communication and data transfer between applications, installed in payment device.
12 cl, 8 dwg
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