March 20 (Reuters) - Wal-Mart Stores Inc said it is tripling the number of U.S. stores in a pilot program that lets shoppers scan items with their iPhones and pay at self-checkout counters. Walmart's ...

Talk about a hidden value. Walmart shoppers are losing their minds after learning that the store’s budget-friendly Great Value items come equipped with invisible barcodes — a secret hiding in plain ...

Walk into certain Walmart locations right now and you might find yourself doing a double take. The rows of self-checkout ...

Costco is following in Walmart’s footsteps to use technology to help eliminate a major customer complaint – long lines at checkout. Warehouse club chain Costco has launched a scan-and-go pilot program ...