Walmart-owned Sam’s Club is expanding its AI-powered checkout-free technology to all its stores by year-end. The technology, which has been deployed at over 120 clubs across the U.S., verifies payment for items in customers’ carts using computer vision and digital tech. Sam’s Club says AI is used in the background to speed up the process and improve over time. The company claims that the technology has significantly sped up exits, as members leave the store 23% faster. Sam’s Club also took a subtle shot at rival Amazon in announcing the expansion, noting that its technology arrives as ‘other retailers have struggled to deploy similar technology at scale, with some abandoning efforts’ – a clear reference to Amazon’s pullback on Just Walk Out.