Tap to pay is slowly coming to all Walmart stores as the company leans into technology. However, that lean into the tech world and electronics has created some backlash among the Walmart faithful. That means a consumer could pick up an item from the shelf where the price displayed was $5. 00, and by the time they walk to the checkout, the price could have been electronically changed to something higher. The other concern raised by the highly efficient electronic price tags was that Walmart would shift to adynamic pricing model.