QR Code
QR Code
A two-dimensional barcode made up of black-and-white square patterns, readable by smartphones and other devices
In Simple Terms
A QR Code is a two-dimensional barcode made up of tiny black-and-white squares that can store a lot of data in a compact space. The three square markers in the corners let it be scanned quickly and accurately from any angle, and built-in error correction means it can recover data even if part of the code is smudged or damaged. Because its specifications are open and free to use, it has spread worldwide — and today it's used for everything from visiting websites and making mobile payments to scanning digital tickets.
Behind the Name
QR stands for Quick Response — named for how instantly it can be scanned. The idea is baked right into the name: scan it and get a response right away. It was actually invented by a Japanese company to streamline automotive parts tracking.
Take a Closer Look!
A QR Code is a two-dimensional barcode made up of tiny black-and-white squares.
By storing information both horizontally and vertically, it can hold tens to hundreds of times more data than a traditional barcode — all in a compact space.
Its defining feature, true to its name, is how quickly and accurately it can be scanned.
The three large square markers in the corners allow a smartphone to instantly recognize the correct orientation, no matter what angle you hold it at.
It also features built-in error correction, so even if part of the code is dirty, torn, or damaged, the data can still be recovered.
A little wear and tear won't stop it from working, which is why QR Codes appear on outdoor posters, product packaging, and in all kinds of real-world environments.
Because its specifications are publicly available and free for anyone to use, it spread around the world.
Today it's used in a huge range of applications — accessing websites, sharing contact info, making mobile payments, and scanning digital tickets for flights and live events.