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Who knows how to generate qr-code? And how to decorate like here http://mojiq.kazina.com/?
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Basically, the Reed Solomon method is an algorithm that all QR code readers have built-in as standard. It allows QR codes to be scanned even if a certain amount of the QR code is covered up or blocked.
QR codes use four standardized encoding modes (numeric, alphanumeric, byte/binary, and kanji) to store data efficiently; extensions may also be used.
Yes, you can convert any text into a text QR code. This includes simple words, numbers, and special characters. You can even include emojis in your text and convert them into a text QR code.
try this tutorial http://www.thonky.com/qr-code-tutorial/, very good in-depth tutorial on creating QR-codes, but only for a certain type of QR-code.
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Most of the time, the problem is the Finite-Field arithmetic, because it is a little bit different. And once you have the generator working, the error-correction techniques make it harder to see if the code is generated correctly. There is another site which has ECC generator: http://www.pclviewer.com/rs2/calculator.html But note that this generator also does not work correctly in all cases, same as Thonky's error code correction generator.
A small project I made allows step-by-step debugging and following the creation of the QRCode and manually changing all the parameters - something no generator on web does. The link: https://github.com/Legoless/QRCode
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