Which mobile commerce innovation first allowed merchants to accept credit card payments directly through a smartphone without additional hardware?

Mobile commerce (m-commerce) has transformed the retail landscape dramatically in the last decade. This trivia question tests your knowledge about a pivotal innovation in mobile payment technology that revolutionized how consumers complete transactions on their smartphones. Understanding these technological milestones helps business professionals recognize pattern-breaking advances in retail technology and anticipate future trends in consumer purchasing behavior.

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Near Field Communication (NFC) payment systems
Card-not-present (CNP) transaction processing
Software-based point of sale (SoftPOS) technology
QR code-based payment platforms