I think you are thinking of a different QR code brother.... So, a crypto payment address can be sent as a QR code, this just gives the address to send to and you still need to manually enter the amount to be sent.I don’t think you understand what I said. Have you ever used a source that sends QR code? If so, did you pay promptly? And if so again, did any of those transactions end up with the source telling you you needed to send more?
Been at this a while now and it’s never happened to me when they send QR code. But it has happened when they only send BTC address and BTC total.
I think what you are referring to is a time sensitive payment QR code. So the seller on checkout will send a QR code that will have ALL the payment details embedded in the QR code - The wallet address and the total amount to be sent in that coin and on what network. These QR codes are usually time sensitive as the market can more, so you have 30min-60min to have payment done.
I don't think that type of QR code will be suitable for QSC as that don't use a shopping cart and are manually processing orders. So from the time we send our order to when they reply might be hours later, then they reply and we see the message, it might be even more hours later....
Just use USDT..... Its exchange rate is static and the fees are like $1. I resisted it for ages as I like BTC but since switching, its so much easier.
