Counterfeiters beware: scientists have developed a new microscopic barcode that can be embedded into currency, credit cards, and industrial packaging. The striped microparticles are invisible to the naked eye, and only reveal their color-coded bands when excited by near-infrared light. The tiny codes can be read under a microscope, or even with a modified smartphone, with error rates of less than one in 1 billion.
Color-Coded Microparticles Could Thwart Counterfeiters
#CreditCards, #IndustrialPackaging
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