As QR codes proliferate among hospitality and retail businesses due to the pandemic, privacy experts warn of businesses tracking customers and spending patterns (Erin Woo/New York Times)

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Erin Woo / New York Times:
As QR codes proliferate among hospitality and retail businesses due to the pandemic, privacy experts warn of businesses tracking customers and spending patterns  —  Fueled by a desire for touchless transactions, QR codes popped up everywhere in the pandemic.  Businesses don't want to give them up.

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