The feature will likely be implemented in the Costco mobile app, where customers scan each item's barcode and pay for it directly through the app. The system shifts most of the checkout work away from the register so quickly. This technology is similar to those used by competitors such as Sam's Club, where Scan & Go allows users to scan items as they go and pay directly through an app. While no official dates have been announced, early indications suggest the technology could be scaled down.