Researchers at TU Wien in Vienna have created a QR code so small it can only be read with an electron microscope. The code measures roughly 1.98 square micrometers, with individual pixels about 49 ...

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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 are a fully-immersed part of life in 2024. But they got their start 30 years ago in 1994 in Japanese Toyota factories. “They used them as just a quick way to sense, you know, what, what was ...

Breakthroughs, discoveries, and DIY tips sent six days a week. Terms of Service and Privacy Policy. The pandemic and our desire to minimize contact with objects and ...