Shutterstock/tarheel1776 Wegmans said its scan app will be discontinued due to high losses. The app, which is used with self-checkout, was introduced in 2020. Sam's Club, Walmart, and Tops have similar scanning apps still in use. Wegmans told customers on Monday that they will no longer be allowed to use the Scan app, which allows shoppers to scan groceries as they go using a phone and pay at self-checkout.