QR Is King

Mobile payments are quickly rendering cash obsolete in China. This new, invisible infrastructure can shut out foreigners — but it follows citizens all over the world.

Logic Magazine
Dec 30, 2019 · 8 min read
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Photo: Xinhua/Su Qiaojiang via Getty Image

By Chenxin Jiang

This summer I spent a month in Beijing. I’d last lived in China in 2016, and I was relieved to find my favorite noodle shops…

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