QR codes: from simple squares to a digital revolution

🔳 Invented in the 1990s in Japan, QR codes (Quick Response) have become a key element of modern digital communication.
These small black-and-white squares allow quick storage of information instantly accessible via smartphone.

They are used in commerce, advertising, healthcare, and even vaccine tracking.

The COVID-19 pandemic accelerated their adoption, enabling contactless menus, health certificate verification, and mobile payments.

Today, QR codes continue to evolve with personalized and secure versions integrating blockchain to ensure traceability.

📲 A simple technology that has transformed our connected daily life.

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