Which retailer holds the Guinness World Record for the most expensive point-of-sale system implementation, costing over $1.5 billion to deploy across all its locations?

Point of Sale (POS) systems have evolved dramatically over the decades, from simple cash registers to sophisticated technology hubs that integrate inventory, customer data, payment processing, and analytics. While most retailers focus on cost-effectiveness, some implementations have broken records with their extraordinary scale and investment. Test your knowledge about the retail technology that made the record books!

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Walmart's 'Project Impact' POS system (2009)
Apple's 'EasyPay Touch' mobile POS system (2012)
Amazon's 'Just Walk Out' cashierless technology (2018)
Target's 'RedCard Integration' POS overhaul (2015)