Which innovative map-based packaging design was first to use thermochromic ink that reveals hidden geographical features when the product reaches a specific temperature?

Test your knowledge about innovative map-based packaging designs that have revolutionized how geography-focused products are presented to consumers. Throughout history, cartographic elements have been incorporated into product packaging to enhance brand identity, create emotional connections, and educate consumers. This poll challenges you to identify a groundbreaking packaging innovation that changed how we visualize geographical products in the retail space.

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National Geographic's 'Climate Change' chocolate bars (2015) that reveal disappearing coastlines when held in warm hands
Starbucks' 'Origin Series' coffee bags (2017) showing altitude-specific growing regions when the coffee is brewed
Fiji Water's 'Hidden Islands' bottles (2016) displaying submerged Pacific landmasses when refrigerated
The North Face's 'Elevation' equipment boxes (2018) revealing topographical details of famous mountains when exposed to body heat