To reduce transaction costs for small merchants, central banks implement standardized, low-cost payment interfaces, specifically Unified Interoperable QR Code Frameworks (such as the EMVCo standard or India’s UPI system).
The Unified QR Code Interface Matrix
QR Code Interface Type | Merchant Technical Integration | Consumer Payment Experience Speed
-------------------------+-----------------------------------+-----------------------------------------
Static Proprietary Matrix| Limited to a single payment app | Slow; forces users to download multiple wallets
Dynamic Interoperable | Generates customized single codes | Fast; accepts any banking or mobile money app
Dynamic interoperable QR codes embed transaction amounts and recipient identifiers within a single code matrix, allowing consumers to scan and complete payments safely using any authorized banking or mobile money wallet app.
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