Which government-developed digital payment system became the world's largest biometric identity platform and dramatically transformed public benefit distribution?

Test your knowledge about government-led retail payment systems that have transformed public service delivery and citizen engagement. These innovations have revolutionized how citizens interact with government services, reducing corruption, increasing transparency, and improving efficiency in public administration. How familiar are you with these landmark government payment initiatives?

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India's Unified Payment Interface (UPI)
Estonia's X-Road System
India's Aadhaar-linked Direct Benefit Transfer
Singapore's GovTech PayNow