A method performed by at least one computing device. The method includes receiving a credit request from a self-checkout device before a customer completes an instore checkout process and sending a request for a Uniform Resource Locator (“URL”) to one or more authentication computing devices. The authentication computing device(s) send the URL to the mobile device. The method includes sending a credit application to the mobile device after the customer selects the URL, receiving a submission of the credit application from the mobile device, approving credit based on the submission, and forwarding a code to the mobile device. The code indicates that the credit is to be used to complete the instore checkout process when scanned by the scanner.