• Caedarai@reddthat.com
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      1 day ago

      QR codes are mostly meant to let you get an amount of info (they’re mostly text-based) without having to type or enter it manually when you might make mistakes or when the process is just faster for the amount of text involved.

      • themoonisacheese@sh.itjust.works
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        22 hours ago

        Yeah, I know. Why would anyone ever use them if creating one required a certificate? If the certificate was so cheap as to not be an obstacle then it wouldn’t be a deterrent to malicious replacement of codes either.

        • Caedarai@reddthat.com
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          36 minutes ago

          Because you can make it so that the required certificate/signature has to meet certain criteria to work. For instance, imagine there was a PayPal equivalent type app for paying QR codes, and they required all codes to be signed by one of their business customers (who they have on file). Or with a certificate they themselves issue their customers.