In 1994, Masahiro Hara and his team at Denso developed the QR code to improve the efficiency of data tracking in Toyota's manufacturing processes. Unlike traditional barcodes, the QR code can store more information and be read from any angle, making it ideal for complex part tracking. Denso chose to release the QR code under an open patent, allowing it to be used widely, which contributed to its eventual adoption beyond industrial settings. Although it was initially utilized in factories and logistics, the QR code did not gain significant consumer traction until smartphone technology evolved. The introduction of QR scanning capabilities in smartphone cameras, particularly with Apple's iOS 11 in 2017, made it more accessible. The COVID-19 pandemic further accelerated its popularity, as businesses sought touchless solutions for menus and check-ins. QR codes became integral to public health measures, such as Singapore's SafeEntry system and the EU's Digital COVID Certificate. Today, the QR code represents a blend of its industrial origins and modern convenience, illustrating a unique journey from factory floors to everyday use in restaurants and public spaces.