Which retail innovation, first widely implemented in Japan due to its dense urban geography, revolutionized convenience shopping and later spread globally?

The retail landscape varies dramatically across different geographical regions, with companies adapting their sales techniques to local cultures and environments. Some innovations have completely transformed how products are sold in specific regions before spreading globally. Test your knowledge about one particularly revolutionary retail innovation that changed how we shop based on geographical insights!

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24-hour convenience stores (konbini) with multi-service kiosks
Drive-through retail windows for all types of shopping
Mountainside vending machines for hikers and tourists
Floating market boats with digital payment systems