Which innovative retail-inspired approach did the U.S. Census Bureau successfully implement in 2020 to improve response rates during the pandemic?

The U.S. Census Bureau doesn't just count people - it also tracks retail trends through economic surveys that influence policy decisions. In 2020, the Bureau implemented an innovative approach to collect retail data during the pandemic. This poll tests your knowledge about how government agencies are adopting retail innovations to improve public service delivery and data collection methods. How well do you understand the intersection of retail innovation techniques and government operations?

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QR code-based response system allowing citizens to complete census forms via smartphone
Blockchain-verified identity system to eliminate duplicate census responses
AI-powered chatbots conducting phone interviews with randomly selected households
Augmented reality census forms accessible through government-issued AR glasses