Which technology marked the biggest leap forward for retail personalization in the 2010s, allowing retailers to deliver truly individualized shopping experiences at scale?

In today's hyper-competitive retail environment, personalization has transformed from a luxury to a necessity. Retailers are leveraging sophisticated technologies to understand and anticipate customer needs on an individual level. This poll tests your knowledge about a pivotal technological advancement that revolutionized how retailers create personalized shopping experiences. Can you identify which innovation marked a turning point in retail personalization capabilities?

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Machine learning algorithms capable of processing vast amounts of customer behavior data to predict preferences and make real-time recommendations
QR code technology linking physical products to digital information portals for additional product details
RFID inventory tracking systems that improved product availability based on regional preferences
Augmented reality mirrors allowing customers to virtually try products before purchase