Abstract: A electronic device and method for providing store payment service are provided. An electronic device for providing store payment service comprising a processor; and a memory operatively coupled to the processor, wherein the memory, when executed, causes the processor to identify first tracking data of the tracking data corresponding to a first time period including the trigger time point, identify a user candidate group for at least some of the at least one user based on the first tracking data, calculate a first reliability for each of the at least some users included in the user candidate group, identify that a user related to the trigger is a first user based on the first reliability, and store instructions for performing an update related to the trigger for a virtual shopping cart of the first user.