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China is tracking kitchen knives with QR codes

In China’s tightly controlled Xinjiang region, home to the mostly Muslim Uighur ethnic group, commonplace purchases from knives to gasoline are strictly controlled with ID checks amid a growing high-tech surveillance push, the Wall Street Journal reports this week. A knife shop owner in the midwestern city of Aksu told the Journal he had to spend thousands of dollars on a machine that turns every “customer’s ID card number, photo, ethnicity and address,” encodes the data as a QR code and lasers it into the blades of even the kitchen knives they buy.

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