The History of QR Codes - From Auto Parts Management to Global Standard
Born from Barcode Limitations
In the early 1990s, Toyota's production lines used barcodes for parts management. However, barcodes stored limited information, requiring multiple barcodes per part. Slow scanning also bottlenecked production efficiency.
Denso's (now Denso Wave) development team set out to create "a code that stores more information and reads faster." Lead developer Masahiro Hara has said the idea for a two-dimensional grid arrangement came to him while playing Go during lunch break.
1994 - The QR Code Is Born
In 1994, Denso announced the QR Code (Quick Response Code). True to its name, high-speed reading was its defining feature. It read about 10 times faster than barcodes and stored tens to hundreds of times more data.
Initially used for auto parts management, Denso Wave decided not to exercise its QR code patent rights. This decision became the biggest factor in QR codes spreading worldwide.
2000s - Adoption in Japan
In 2002, mobile phones with built-in QR code readers appeared, bringing QR codes to everyday consumers. QR codes began appearing on magazine ads, product packaging, and business cards.
In 2004, QR codes were adopted as international standard ISO/IEC 18004, recognizing this Japanese technology as a world standard. However, overseas adoption remained limited at this point.
2010s Onward - Global Adoption
From the 2010s, smartphone proliferation accelerated QR code usage worldwide. In China, WeChat Pay and Alipay drove explosive QR code payment adoption. India saw similar growth through UPI.
Apple's inclusion of QR code scanning in iOS 11's standard camera in 2017 enabled scanning without dedicated apps, boosting Western adoption. During the 2020 COVID-19 pandemic, contactless needs drove QR code adoption for restaurant menus and vaccination certificates, fully embedding them in daily life worldwide.