Which of these food packaging innovations uses chemical sensors that change color to indicate food spoilage without requiring consumers to open the package?

Modern food packaging has evolved dramatically to address food safety, shelf life, and consumer convenience. One of the most fascinating developments in recent years has been the emergence of 'smart packaging' - technologies that do more than simply contain food products. Test your knowledge about these cutting-edge product design innovations that are changing how we interact with packaged foods!

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RFID tracking labels that monitor temperature throughout the supply chain
Time-temperature indicators (TTIs) that show cumulative heat exposure
Freshness indicators with reactive dyes that respond to metabolites from bacterial growth
QR-based blockchain verification systems that authenticate organic certification