Abstract: A semiconductor memory device comprises a substrate; a mold structure on the substrate; a plurality of channel structures extending in the mold structure; a source layer and a source sacrificial layer between the substrate and the mold structure, wherein the source sacrificial layer is spaced apart from the source layer; and a source support layer on the source layer and the source sacrificial layer, wherein the source support layer is between the source layer and the source sacrificial layer, wherein an upper surface of the source support layer includes first and second portions extending parallel to the substrate, and a third portion that connects the first and second portions, wherein a vertical distance from an upper surface of the source layer to the first portion is smaller than a vertical distance from an upper surface of the substrate to the second portion.

Abstract: Disclosed is a method of processing item sales information by an electronic apparatus including acquiring a purchase request including item information related to an item selected by a user and information related to a payment means, providing a purchase response including approval information corresponding to the purchase request before proceeding with payment through the payment means in response to the purchase request when the information related to the payment means satisfies a first condition, transmitting a release request for the item to a first server; and requesting payment for at least some of an amount corresponding to one or more purchase requests related to the payment means according to an arrival of settlement timing corresponding to the payment means.

Abstract: Provided is a financial service providing method of an electronic apparatus comprising checking whether a financial service is available for a user based on the user's first sales information, checking a condition of use of the financial service for the user based on the user's second sales information, providing information on whether the financial service is available and the condition of use to an external apparatus, providing unsettled sales information of the user based on an information request from the external apparatus, and changing payment account information of a sales price to be paid to the user based on receiving information related to approval of providing the financial service from the external apparatus. Other example embodiments are also possible.

Abstract: Disclosed is a method of processing information in an electronic apparatus, the method including transmitting a point inquiry request including user information for identifying a user to servers of one or more affiliates, acquiring balance information of a first point corresponding to the user from a first affiliate among the one or more affiliates in response to the point inquiry request, providing the balance information of the first point to the user, and processing, when information including a conversion request for conversion between the first point and a second point related to a service of the electronic apparatus is acquired from the user, a transaction corresponding to the conversion request.

Abstract: Disclosed is a method of processing item sales information by an electronic apparatus including acquiring a purchase request including item information related to an item selected by a user and information related to a payment means, providing a purchase response including approval information corresponding to the purchase request before proceeding with payment through the payment means in response to the purchase request when the information related to the payment means satisfies a first condition, transmitting a release request for the item to a first server; and requesting payment for at least some of an amount corresponding to one or more purchase requests related to the payment means according to an arrival of settlement timing corresponding to the payment means.

Abstract: Disclosed is a method of processing information in an electronic apparatus, the method including transmitting a point inquiry request including user information for identifying a user to servers of one or more affiliates, acquiring balance information of a first point corresponding to the user from a first affiliate among the one or more affiliates in response to the point inquiry request, providing the balance information of the first point to the user, and processing, when information including a conversion request for conversion between the first point and a second point related to a service of the electronic apparatus is acquired from the user, a transaction corresponding to the conversion request.