Big data could save physical retail. But privacy concerns are bubbling.

Concerns about consumer privacy are not just flourishing online but in brick and mortar stores as well. Retailers are already using Bluetooth technology to detect customers’ smartphones when they walk into stores and hit them with promotions while they shop, and companies are also marketing facial-recognition technology to them, describing it as a way to flag shoplifters, according to the Wall Street Journal. Stores say the new practices are meant to improve the overall shopping […]

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