German Physicists Set Record with World's Smallest QR Code

Researchers at the University of Münster have created a QR code so tiny it requires a microscope to view, earning a Guinness World Record.

The QR code measures just 5.38 square micrometers, making it approximately 20 times smaller than the previous record held by a team in Singapore.
The size of the QR code is about seven times smaller than a human red blood cell, highlighting its microscopic scale.
The code, when magnified, directs users to the University of Münster's quantum physics webpage.
The achievement was officially recognized by Guinness World Records following verification by an independent technology firm.
The university aims to use this groundbreaking QR code to promote its physics program.