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qrcode
💮 amazing QRCode generator in Python (supporting animated gif) - Python amazing 二维码生成器(支持 gif 动态图片二维码)
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InfluxDB
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I've created a website where anyone can create QR codes that look how however you want them to look and still redirect wherever you want. And you can also use this to create QR gifs like this one that are actually scannable! It required quite some hacking to get this to work, so if you're interested check out my blog post Hacking QR code design. All the code is completely free and open source, check out the GitHub repo!
I don't think that's the first.... Someone I know did quite the same thing long time ago, Link