n a world where fake medical implants, counterfeit microchips, and cloned devices can threaten lives, money, and security, proving that a physical object is truly genuine is a major challenge.
Conventional digital encryption protects data, but it can’t verify physical items. Even serial numbers, barcodes, and holograms can be copied if someone knows the fabrication details.
Now, scientists have developed a novel method using a special kind of gel that can act as a unique, unclonable physical signature. The secret lies in turning the hidden structure of a soft, conductive hydrogel into a measurable signal that no one can duplicate.
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