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How QR codes work and what makes them dangerous – a computer scientist explains

  • Written by Scott Ruoti, Assistant Professor of Computer Science, University of Tennessee
How QR codes work and what makes them dangerous – a computer scientist explainsQR codes are visual patterns that store data smartphones can read.AP Photo/Vincent Yu

Among the many changes brought about by the pandemic is the widespread use of QR codes, graphical representations of digital data that can be printed and later scanned by a smartphone or other device.

QR codes have a wide range of uses that help people avoid...

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