I used this tech from denso wave to create a neat service which provides an easy... | Hacker News

Hacker Newsnew | past | comments | ask | show | jobs | submit

dt3ft on Sept 14, 2022 | parent | context | favorite | on: How a QR code works

I used this tech from denso wave to create a neat service which provides an easy way to create qr codes which lead to a pdf file you upload, and the file can be later replaced/updated while retaining the same qr code, which comes in handy for printed qr codes (brochures, posters, manuals etc): https://pdf2qrcode.com/

treve on Sept 15, 2022 [–]

QR codes just embed a url, so as long as you can change what you get when you open a url any service can do this, or even any old hosting service.

Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact