I got a behind-the-scenes look at Walmart's new digital price tags that are sparking controversy

Walmart has been rolling out digital price tags across the US. I visited two stores to see how the tech works for employees and customers.
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How digital price tags could change the future of grocery shopping

Electronic shelf labels, digital screens that display the price of an item, are replacing traditional paper price tags in grocery stores across America. "Digital price tags may enable Kroger and other ...