This is what "Oh By Codes"[1] are for.
Instead of trying to paint a QR code, which is difficult, you can just chalk a 6 character code.
Further, you can create them on the fly without using a special tool - just a textarea on a simple webpage.
You can encode up to 4096 characters or a single URL redirect.
[1] https://0x.co
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It's certainly not for every use-case ...
This is what "Oh By Codes"[1] are for.
Instead of trying to paint a QR code, which is difficult, you can just chalk a 6 character code.
Further, you can create them on the fly without using a special tool - just a textarea on a simple webpage.
You can encode up to 4096 characters or a single URL redirect.
[1] https://0x.co