QR Code 2D Bar Code Information

Introduction
Technical Data/Features
Encoding
Sample Images
Common Applications
Links

INTRODUCTION

A QR Code is a 2D matrix code created by the Japanese corporation Denso-Wave in 1994. The "QR" is derived from "Quick Response", as the creator intended the code to allow its contents to be decoded at high speed. QR Codes are currently the most popular type of two dimensional code in Japan. Their popularity is increasing with applications like storing addresses, URLs and business card contact information that can be captured and utilized by mobile phones equipped with a camera.

TECHNICAL DATA / FEATURES

Code Type	Matrix
Versions	Model 1 (original)
	Model 2 (enhanced)
Encodable Character Set	Alphanumeric data (0-9; upper case A-Z; nine other characters)
	8-bit byte data
	Kanji characters
Symbol Height	21 - 177 modules
Symbol Width	21 - 177 modules
Omnidirectional Decoding	Yes
Error Correction	Four levels of Reed-Solomon error correction:
	L = 7%
	M = 15%
	Q = 25%
	H = 30%
Maximum Data Characters	4,296 text
	7,089 digits
	2,953 bytes
	1,817 Kanji characters