DNA might replace barcodes to tag art, voter ballots: study

Easy-to-remove barcodes and QR codes used to tag everything from T-shirts to car engines may soon be replaced by a tagging system based on DNA and invisible to the naked eye, scientists said Thursday.The DNA-based system could help anti-forgery efforts, according to researchers who said thieves struggle to find or tamper with a transparent splash of DNA on valuable or vulnerable items, such as election ballots, works of art, or secret documents.In an article published in Nature Communications, researchers at the University of Washington and Microsoft said that the molecular tagging system, cal…

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