Which scientific innovation in packaging has revolutionized temperature monitoring for sensitive pharmaceutical products without requiring battery power?

In the intersection of science and retail, packaging innovations are transforming how products maintain integrity and communicate with consumers. Recent breakthroughs in smart packaging have introduced technologies that extend shelf life, monitor product conditions, and enhance consumer engagement. This poll tests your knowledge about a recent scientific advancement in packaging that's changing how pharmaceutical and perishable products are monitored throughout the supply chain.

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RFID-embedded thermochromic inks that change color permanently when exposed to temperatures outside safe ranges
Quantum dot luminescence markers that require UV light scanning to reveal temperature history
Bluetooth-enabled microsensors that transmit temperature data to smartphones within 50-foot radius
Graphene-based digital displays that show real-time temperature readings powered by ambient light