I've half-jokingly said that there's never a good reason to use a QR Code. However, I'm working on an MVP (minimally viable product) for a small startup with Greg Shackles and we actually have a good reason to use one. We have a mobile device, a Web Site, and a Windows Application, and a QR Code is a pretty quick way to move data between the mobile device and the other applications without the mess of Bluetooth pairing. As I mentioned, we display the QR code on an ASP.NET website, as well as within a Windows app that happens to be written in WPF. The iPhone app uses C# and Xamarin. There's a great QR Code library called "ZXing" (Zebra Crossing) with ports in Java and also in C# . The C#/.NET one, ZXing.NET is a really...(read more)
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