Which government digital service platform was the first to implement a 'verify once, use many' identity system that allowed citizens to access multiple government services with a single authentication?

The digital transformation of government services has been a key focus for public sector innovation worldwide. One particular platform stands out for its revolutionary approach to citizen engagement and service delivery. Test your knowledge about this significant advancement in e-governance that changed how citizens interact with government services online.

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UK's GOV.UK Verify (launched 2014)
USA's Login.gov (launched 2017)
Estonia's X-Road (launched 2001)
Singapore's SingPass (launched 2003)