Create QR for link/marketing, payment, Wi-Fi, contact, email, SMS, phone, logistics, healthcare and crypto.
Generates a string of type SPD*1.0*… (commonly supported by CZ banks). If your bank scanner requires a specific additional field, it can be added.
Recommendation: put mainly an ID and a link to the detail in the system in the QR. QR is not a database
In reality, a "changing QR" is done via a URL (the QR points to a page that changes over time). Here we generate either URL, or text plan.