Which product design approach did Estonia's pioneering e-identity system (considered the most advanced digital government identity platform) adopt that contributed most to its widespread adoption?

The digital transformation of government services has fundamentally changed how citizens interact with public institutions. As governments worldwide implement digital identity solutions to streamline access to services, understanding the evolution and implementation of these systems becomes crucial for product managers working in civic technology. Test your knowledge about the strategic choices behind government digital identity platforms.

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Decentralized blockchain-based architecture with citizen-owned private keys
Card-based digital ID with separate online authentication via X-Road platform
Facial recognition biometrics as the primary authentication method
Social media account integration with government verification layers