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The 7-Eleven Quick Check-Out (QCO) is a self-checkout system that uses 3D imaging and smart scale technology to recognize items without barcodes. Developed through extensive prototyping and field testing, it balances accuracy, speed, and durability in a compact form. Details such as a drainage guide and protected sensors reflect attention to real-world use, while the intuitive interface improves customer flow and allows clerks to focus on higher-value tasks. The result is a practical, well-considered solution that makes checkout faster and more efficient.