CALCULATION METHOD, INPUT CONTROL METHOD AND DEVICE Russian patent published in 2020 - IPC G06Q20/40 

FIELD: data processing.

SUBSTANCE: invention relates to a method and system for making payments for purchases. Method consists in the fact that: sending a user account identifier request allocated to the user by a third-party server which controls the account corresponding to the account identifier and the third biometric feature of the user; in response, a user account identifier is received; obtaining a first biometric feature of a user; determining whether the first biometric feature is valid, searching for a third biometric feature, and if the first biometric feature matches the third biometric feature, determining that the first biometric feature is valid; and establishing a correspondence between the first biometric feature and the account identifier; storing a first biometric feature, an account identifier and a match in a storage device; collecting second biometric feature of user; determining an account identifier which corresponds to a first biometric feature which matches the second biometric feature; and performing calculation using a certain account identifier.

EFFECT: technical result consists in improvement of safety and efficiency of making payments for purchases.

14 cl, 11 dwg