Hey, I was curious how does those UPI QR with pre-billed amounts work? Has anyone worked on them?
You know like when the delivery guy shows a qr and it already shows me the amount that I have to pay. I find it really cool but couldn't wrap my head around how it works?
You can put anything in a QR. In this case it’s a payment link with a UPI transaction ID which is created when the seller requests a new payment. On your side it’s as simple as open that link in a UPI compatible app
Thanks, I think I it now. So, now is there a way to create something like this for fun or one has to talk to a bank to get these services?
A payment QR code for fun? For individuals, you can "request" money via UPI apps. I think some apps allow creation of a link, which you can paste on any QR generators.
To do it at a scale and programatically, you'll need a provider connect (e.g. razor pay/phone pe/paytm/etc.), for which you need a company registration.
This is the string upi QR code contains:
upi://username@upi?amount=100 Technically upi is a protocol just like http. and may contain multiple parameters such as amount, currency, code expiry time and many more. Where username@upi is receivers I'd,
Thanks, I understand it all now. You're amazing.
Simple Answer:
A QR is like a URL. Just like how you can pass query parameters to a URL, you can do that with QRs as well.
In fact, try converting a QR to text and see what happens :)
Razorpay dynamic qr let you do that
