Which of these product innovations was first introduced to the public as a failed retail experiment before being reimagined and becoming a multi-billion dollar industry standard?

The retail landscape has been transformed by groundbreaking product innovations that fundamentally changed how consumers shop and businesses operate. Some inventions created entirely new categories, while others revolutionized existing ones. This trivia tests your knowledge of pivotal product development milestones that reshaped retail history. Can you identify which innovation truly disrupted the status quo?

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Post-it Notes, which were initially marketed as bulletin board bookmarks before their adhesive properties were recognized
QR codes, which were first used as inventory tracking systems in automotive manufacturing before retail applications
Touch screen kiosks, which began as airport check-in stations before expanding to retail environments
RFID tags, which were developed for highway toll systems before being adapted for retail inventory management