FIELD: information technology.
SUBSTANCE: method uses trolleys and grids in which there is a control device having a balance and/or scanner which can read information on the name of commodities, their price and weight, and ensure their wireless communication with a server. When approaching the point-of-sale terminal, the purchase control device determines the distance to the point-of-sale terminal corresponding to the end of purchasing and provides information on ordered commodities to the point-of-sale terminal through wireless communication, where a bill is created and payment is made.
EFFECT: monitoring purchases and automatic payment.
2 cl, 1 dwg
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