Walmart, Best Buy and other stores now use digital price tags. Critics say they could lead to different prices for different shoppers.

Walmart, Best Buy, and other major retailers have begun installing digital price tags in stores. The tags use electronic displays instead of paper labels and can be updated remotely. Retailers have stated the technology allows for faster price changes and inventory management, though some consumer advocates have raised questions about whether dynamic pricing could result in different customers seeing different prices for the same product.

• MarketWatch — Walmart, Best Buy and other stores now use digital price tags. Critics say they could lead to different prices for different shoppers.

Next story