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Sign of the times: QR code turns better with AI

AI corrects errors and personalises codes in the ubiquitous signs used by billions of people. It creates dynamic images that change at frequent intervals to prevent misuse

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Pranjal Sharma

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Japanese engineer Masahiro Hara is not widely known, but his creation is ubiquitous. Hara invented the QR code, short for quick response code, in 1994 while working for Japanese automotive technology company Denso Corporation. After several experiments, Denso initially used his creation for inventory management but later the code was made available for public use. 

Denso retained its patent for the code but decided not to exercise its right: A rare thing to do by a private company. “This policy was in place from the very beginning of the code development, honouring the developers' intent that the QR code could be
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