Denso Wave gave QR Code to the world and it became the scan standard.

In 1994 Denso Wave, then a division of Denso Corporation, announced QR Code — a two-dimensional code able to hold about 7,000 numerals and full kanji characters and to be read at high speed. It was built for Toyota group factories, where ordinary barcodes could not carry the part numbers and Japanese text that production tracking needed.

Rather than keep the code proprietary, Denso Wave pushed it through standards bodies: AIM in 1997, JIS and the Japan Automobile Manufacturers Association's EDI standard, then ISO/IEC 18004 as an international standard in June 2000. The company also waived its rights to a key patent (No. 2938338) for standardized QR codes, so no license fee stood between the format and any user.

The design choice that made adoption inevitable was openness: no royalties, a published standard, and codes that any camera with the right decoder could read. When smartphones arrived, QR was already free and standardized, so it became the default way to connect a printed object to a screen — payments, menus, tickets and URLs.

Waive the patent; the format becomes infrastructure

A published ISO standard let every hardware and software maker build readers without negotiating a license.

Waiving the patent removed the fee that would have made rivals avoid the format.

QR's capacity for kanji and high-speed reading solved a real factory problem first.

Being free and standardized meant QR was waiting when smartphones gained cameras.

When a vendor waives the toll on its format and lets standards bodies own the spec, the format becomes shared infrastructure; the vendor keeps the ecosystem lead while everyone else builds on it.

QR codes now sit on billions of packages, menus, tickets and payment screens worldwide; mobile payments and touchless menus both ran on the format Denso Wave opened up. Denso Wave still sells readers and licensing for custom variants, but the core code is shared infrastructure.