FIELD: physics.
SUBSTANCE: invention relates to means of authorizing an electronic transaction. Method of electronic transaction authorization executed by means of a payment terminal comprises steps of: receiving a transaction request from a primary payment device; determining whether a request for a transaction involves a source of financing a substitute (FSP) obtained from the primary funding accounting number (FPAN) of the funding source in accordance with a predetermined algorithm; determining that the FSP is not present in the denial of service list stored in the payment terminal, and in response to that authorizing the transaction request received from the primary device, if a request is received from a secondary payment device comprising a device accounting number (DPAN) and said FSP, determining that the FSP is not present in the denial of service list stored in the payment terminal; and in response to this, secondary payment device transaction request is authorized. Payment terminal is configured to implement this method.
EFFECT: technical result is higher efficiency of authorizing electronic transactions.
5 cl, 12 dwg
