Which linguistic innovation was FIRST successfully integrated into mainstream retail POS systems to improve multilingual customer service?

Modern point of sale (POS) systems have revolutionized retail by incorporating advanced language processing capabilities. These systems now understand multiple languages, dialects, and even speech patterns to enhance customer experience. This trivia question explores how linguistics has transformed retail technology, bridging communication gaps between businesses and their diverse customer base.

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Real-time speech-to-text translation for 50+ languages
Dialect recognition software that adapts to regional accents
Unicode support for displaying multiple writing systems
Natural language processing for conversational commerce