Which innovative product packaging technology was first developed specifically for linguistics products to display text in multiple writing systems simultaneously without increasing package size?

Product packaging in the language learning and linguistics industry has evolved significantly over the past decade. From dictionary covers to language learning software boxes, the way linguistic products are packaged influences consumer perception and purchasing decisions. This trivia question focuses on a groundbreaking innovation in multilingual product labeling that changed how language products are marketed globally.

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Variable Ink Typography (VIT) - ink that changes between writing systems based on viewing angle
Augmented Reality Language Labels (ARLL) - requires smartphone scanning to see additional languages
Thermal Script Technology (TST) - reveals additional languages when touched
Microprinted Language Layers (MLL) - uses microscopic text layering visible with included magnifier