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QR Code is registered trademark of DENSO WAVE INCORPORATED. This registered trademark applies only for the word "QR Code", and not for the QR Code pattern (image).

A QR code (abbreviated from Quick Response code) is a type of matrix bar-code (or two-dimensional code) first designed for the automotive industry. More recently, the system has become popular outside of the automotive industry due to its fast readability and comparatively large storage capacity. The code consists of black modules arranged in a square pattern on a white background. The information encoded can be made up of any kind of data (e.g., binary, alphanumeric, or Kanji symbols).

The amount of data that can be stored in the QR code depends on the character set, version and error correction level. The maximum values for version 40 with error correction capacity levels L, M, Q and H are:

Numeric only7,0895,5963,9933,057
Alphanumeric4,296 characters3,391 characters2,420 characters1,852 characters
Binary (8 bits)2,953 bytes2,331 bytes1,663 bytes1,273 bytes
Kanji/Kana1,817 characters1,435 characters1,024 characters  784 characters

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Last Updated: Monday, 04-Feb-2019
HCI Data Ltd.