A QR Code® is a 2D code developed by DENSO WAVE in 1994, and is most commonly used in Japan.
A QR Code® can encode numerals, alphabetical characters, kanji characters, katakana and hiragana characters, symbols, binary data, control codes and other data.
Since QR Codes encode data in the transverse and longitudinal directions, a QR code can represent data using approximately 10 times less space than a traditional barcode.
QR Codes® can be read at high speed regardless of the scanning angle. The secret lies in three position detection patterns, which are located in each code, enabling stable high-speed reading without being affected by the background patterns.
Since QR codes have an error correction function, data can be restored* even if a code is partially stained/missing.
* Data may be unable to be restored depending on the dirt/damage level.