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A comment on In Urban China, Cash Is Rapidly Becoming Obsolete. Parent comment

Re:In Urban China, Cash Is Rapidly Becoming Obsolete by grok2 on Sunday July 16, 2017 @11:13PM (#14785426)
It seems to me that QR codes could make it easy for someone to replace the original QR code with a different QR code at any place that accepts them and the merchant is none-the-wiser (unless there is some form of integration back to their PoS system) -- it seems like this could be a new form of skimming (stick your own QR code over any merchants :-)).
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Re:In Urban China, Cash Is Rapidly Becoming Obsolete by TACIXAT on Tuesday July 18, 2017 @10:22AM (#14796700)
If most are screen based, you could just dynamically generate them and have them expire after N minutes. If someone wants a printed one make them jump through an application process for a long standing code.
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Re:In Urban China, Cash Is Rapidly Becoming Obsolete by teknologist on Tuesday July 18, 2017 @09:31PM (#14801479)
They do for individual payments but storeowners sometimes tape their printed QR codes to walls and counters and they seem to want accommodate this use case too (essentially POS-less or "bring your own POS")
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