Abstract: A method and system provide on demand self checkout for users purchasing products from a store, according to an embodiment. When a user believes that lines at a conventional clerk operated checkout counter are too long or when the user merely wants to do a self checkout, the user can go to a designated area in the store. The user can open an app installed on the user's mobile device and can perform a self checkout by scanning the products with the mobile device.

Abstract: Embodiments of methods and systems provide transaction processing with dynamic generated codes. In an embodiment, a system comprises a remote server adapted to interact with a POS device and a client device; one or more processors; and one or more memories adapted to store machine-readable instructions to cause the system to: receive, by the server at the remote location, a transaction request from the POS device of the seller, wherein the transaction request includes transaction information in connection with a transaction conducted at the POS device; generate a transaction code upon receiving the transaction request from the POS device, wherein the transaction code includes the transaction information; send the transaction code to the POS device; receive an authorization request for the transaction from the client device after the client device reads the transaction code from the POS device; and process the transaction.

Abstract: A method and system provide on demand self checkout for users purchasing products from a store, according to an embodiment. When a user believes that lines at a conventional clerk operated checkout counter are too long or when the user merely wants to do a self checkout, the user can go to a designated area in the store. The user can open an app installed on the user's mobile device and can perform a self checkout by scanning the products with the mobile device.