Customers will be able to pay using eligible contactless cards, smartphones and smartwatches, effectively opening Walmart checkouts to services including Apple Pay and Google Pay. That is important because Walmart spent years favoring its QR-based Walmart Pay system rather than adopting standard NFC payments used by many competing retailers. Eligible Walmart, Sam’s Club and OnePay cards can be added to digital wallets, while OnePay separately expanded Apple Pay support across more of its card lineup. OnePay also offers rewards, debit, credit and buy-now-pay-later services tied closely to the Walmart ecosystem. Walmart Stock Slips After Brief Rebound The checkout upgrade arrives during avolatile stretchfor Walmart stock.