QR Code stands for Quick Response Code; a completely new trademark for the matrix barcode or 2-dimensional barcode. The revolutionary code was first designed by Denso Wave in 1994 for Automotive Industry in Japan.
The QR code became popular outside the automotive industry due to its fast readability and greater storage capacity. Currently it is being used for product tracking, item identification, time tracking, document management, and general marketing.
A QR code uses four standardized encoding modes numeric, alphanumeric, binary/byte, and kanji to store data and sometimes some extensions are also used. It consists of black squares arranged in a square grid on a white background and can be read by QR scanners or by smartphone apps.
- Cheap in production
- Small size
- Large capacity
- High speed scanning
- Readable from any orientation
Users can create their own QR code in order to display some data like vCard, text, links etc. from a lot of available free or paid services online (or using smartphone apps too).
To know more about QR codes, visit this wikipedia page.