India Today on MSN

How does a UPI QR code work? It hides extraordinary mathematics in plain sight

Every UPI payment you make by scanning a QR code triggers a cascade of sophisticated mathematics in under a second. Here is ...
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'Never gonna give you up': CBSE class 12 maths paper QR code leads to Rick Astley song, 'rickrolls' students. Board responds

A QR code printed on a Class 12 mathematics paper of the Central Board of Secondary Education (CBSE) has sparked a debate online. Some students claimed that scanning the code led them to the song ...
KSAT

What’s a QR Code? KSAT Explains

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 ...