Which retail innovation holds the Guinness World Record for 'Fastest Adoption of a Retail Technology' based on global implementation speed?

The Guinness World Records has documented many fascinating achievements in the retail and product world. From the largest retail stores to the most expensive products ever sold, these records showcase the evolution of consumer markets and retail strategies. This trivia tests your knowledge about extraordinary retail milestones that have made it into the record books. How much do you know about these remarkable retail achievements?

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Self-checkout terminals (introduced 1992)
QR code payment systems (introduced 2011)
RFID inventory tracking (introduced 2003)
Facial recognition shopping (introduced 2017)