firebase - Swift: QR code that reset after a certain time period

Question

I’m trying to make a QR code that expires after one time usage or after 60 seconds like the qr generated in eWallet payment type. But the qr code input data for my project is phone number and the firebase uuid.

I’m guessing that I have to create a hash string that periodically change after 60 seconds so that my qr code will self refresh. But I’m lack of coding experience to present this in my code

Does anyone have an idea on what approach I can add in my function to reset the qr code without changing the input?

Answer 1

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