<Enhancement to product>
To make the QR code functionality more secure and failsafe, we have prevented duplicated payments for a dynamic QR code. If a customer scans a unique QR code generated by the acquirer on-the-fly, only one payment transaction can go through. The Way4 host makes certain checks to decline repeated attempts.
This new feature works for UnionPay QR, mVisa and MasterPass QR payments.