The Economist (US), June 12th, 2004
Security technology: Tiny DNA fragments can function as invisible embedded security tags
IT HARDLY needs saying that the double helix of deoxyribonucleic acid--better known as DNA--is one of nature's most wondrous materials. Its twisting strands securely encode the genetic information on which all life depends. But Jun-Jei Sheu, a Taiwanese scientist, thinks DNA might be able to keep other things safe, too.
In the mid-1990s, he had the idea of using microscopic fragments of DNA, embedded like tiny bar-codes into everyday objects, as a security and anti-counterfeiting tool. The mathematical...
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