A method includes receiving a request for registered payment options associated with a user computing device, where the request includes an identifier uniquely identifying one of the user computing device and the user. The method includes identifying one or more payment options associated with the device identifier, where each of the one or more payment options is associated with respective payment instrument information. The method includes providing one or more codes, where each code of the one or more codes identifies a respective payment option of the one or more payment options. The method includes receiving a first code of the one or more codes and transaction information. The method includes accessing, based upon the first code, payment instrument information associated with the payment option identified by the first code, and causing the processing of the payment instrument information in relation to a transaction identified by the transaction data.