A collaborative effort between a research team from the Vienna University of Technology in Austria and a German data storage technology firm has yielded a groundbreaking achievement: the development of the world's smallest QR code. Spanning a mere 1.98 square micrometers, this QR code has secured its position in the Guinness World Records. Notably, this QR code features a high storage density and is etched onto a ceramic substrate, ensuring data longevity for centuries without the necessity of ongoing energy supply.

The research team utilized focused ion beam technology to precisely inscribe data onto an ultra-stable ceramic thin film. This innovative QR code is not only exceptionally durable but also supports repeated readings. Remarkably, its size is a mere 37% of that of the previous record holder. Looking ahead, the team plans to delve into new materials, accelerate writing speeds, develop scalable manufacturing processes, and promote the industrial application of this technology. Additionally, they aim to explore the possibility of encoding more intricate data structures into ceramic thin films, thereby offering sustainable solutions for long-term data storage.