Which innovative linguistic feature did Coca-Cola first introduce to their product packaging in the 1960s that revolutionized global branding?

In our globalized marketplace, language plays a crucial role in product packaging. From multilingual instructions to carefully crafted slogans, linguistic choices can make or break a product's success across different markets. This poll tests your knowledge about a fascinating linguistic adaptation that revolutionized product packaging for international audiences.

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Phonetic brand name representation using International Phonetic Alphabet (IPA) symbols
Contour bottle design with the brand name in local scripts (including non-Latin alphabets)
Visual language system replacing text with universally understood symbols
Dynamic QR codes that would display product information in the user's native language