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by leppr
2554 days ago
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> No it doesn't. If I print out my payment QR code, you can scan it and pay me even if my phone is off. When I buy vegetables at the market, the vendors have their Alipay and WeChat QR codes displayed on stickers. That's fine for very small amounts like groceries in a market but this is very easy to cheat with a fake client app on the buyer's device. |
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