Which government first launched a unified digital payment interface (UPI) system that revolutionized both public service payments and retail transactions nationwide?

Government agencies worldwide are modernizing their payment systems to improve citizen services. From tax collection to benefit distribution, these retail payment innovations are transforming how citizens interact with government services. Test your knowledge about a groundbreaking government payment system that changed how an entire nation conducts financial transactions with the public sector.

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India (with the BHIM UPI system launched by the National Payments Corporation of India)
Estonia (with the X-Road digital backbone system)
Singapore (with the PayNow government transaction platform)
Sweden (with the BankID national payment infrastructure)