Which innovative cybersecurity approach was first adopted by Estonia's government for its e-residency program, now widely replicated in government digital ID systems worldwide?

In today's digital government services, cybersecurity is paramount when handling citizen data. Modern identity verification systems protect sensitive information while ensuring accessibility. This trivia tests your knowledge about a significant government cybersecurity innovation that changed how citizens interact with digital government services. How well do you understand the technology that keeps government services secure yet accessible?

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Blockchain-based distributed digital identity verification
Centralized biometric database with single authentication point
Paper-based two-factor authentication with rotating security codes
Cloud-hosted facial recognition with proprietary government algorithms