Which retail innovation holds the Guinness World Record for 'Largest Product Testing Event' that revolutionized how companies gather customer feedback?

World records aren't just about human achievements - they also exist in the retail and product space! Companies are constantly pushing boundaries to create memorable customer experiences and innovations that earn their place in the record books. Test your knowledge about extraordinary retail milestones that have made history and transformed customer experiences around the globe.

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Procter & Gamble's 2018 simultaneous testing of a new toothpaste across 12,000 households in 15 countries
Amazon's 2019 AR virtual try-on event with 24,000 participants testing furniture in their homes via smartphone app
Apple's 2017 in-store iPhone feature testing with 18,500 customers across 121 flagship stores
Samsung's 2020 synchronized smart home product testing with 22,000 beta testers across 8 countries