Color-Coded Microparticles Could Thwart Counterfeiters

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.

















from WIRED » Science http://feeds.wired.com/c/35185/f/661470/s/39be427d/sc/4/l/0L0Swired0N0C20A140C0A40Ccolor0Emicroparticle0Ebarcodes0C/story01.htm

via Science News