Packaging bags are evolving from passive containers to "smart butlers". Researchers are developing packaging with integrated microsensors that can monitor the freshness of contents in real-time, such as indicating whether food has spoiled through color changes. In addition, packaging using QR codes or NFC technology allows consumers to easily obtain product traceability information, usage guides, etc. through mobile phone scanning. This not only enhances safety and consumer experience, but also provides big data support for supply chain management, which is an important development direction in the packaging field.
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