this post was submitted on 14 Mar 2025
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[–] themoonisacheese@sh.itjust.works 1 points 4 days ago (1 children)

Very cool. Why would anyone use qr codes then? When you can just write a url and that's free

[–] Bilaketari@reddthat.com 2 points 4 days ago (1 children)

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 2 points 4 days ago (1 children)

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.

[–] Bilaketari@reddthat.com 1 points 3 days 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.