Which of these revolutionary retail technologies was first developed in Amazon's secretive innovation lab, known as 'Lab126'?

Test your knowledge about game-changing inventions that transformed retail and consumer experiences! Many revolutionary products we take for granted today began as experimental projects in corporate innovation labs. These labs serve as the birthplace for technologies that reshape how we shop, interact with brands, and experience products. Can you identify which famous innovation emerged from its company's secret development environment?

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Amazon Echo (Alexa voice assistant)
Apple Pay's contactless payment system
Walmart's Store Assistant mobile app
Target's augmented reality shopping tool