Smart packaging has no official definition but it is a commonly used term. It refers to relatively new packaging features that go beyond simple changes of shape or colour, alphanumerics, graphics, barcodes or better inactive protection. The heart of the subject is responsive features such as coverings that let certain gases out and other gases in or radio tags that return a signal when interrogated electronically. However, some would include modern forms of anticounterfeiting or antitamper feature in the definition.
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