Method, apparatus and recording medium storing instructions for providing information about purchase history using masked number

Abstract

The present invention provides a method implemented by an electronic device, comprising the following steps: obtaining information of a hidden checkout method identification number, wherein the hidden checkout method identification number is a portion of the identification number used for checking out goods in a store; using the hidden checkout method identification number as a customer identifier to generate information on the customer's purchase history in the store; and transmitting the generated information on the customer's purchase history to a store terminal on the store side.

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