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@spiral's recent blog post about Human Readable Addresses (#1330863) got me thinking about QR codes and how much I like them.
Perhaps you recall Coinkite's excellent and still more excellently-named BBQr? BBQr was announced several years ago, but this QR code standard has been seeing some great development.
It's a pretty tough to beat system. I wonder if Human Readable Addresses is a case of trying to solve a problem that doesn't actually need to be solved (at least doesn't need to be solved with more complexity).