2-Dimensional Code Reader: Overview | New Zealand

2-Dimensional Codes were developed in response to demands on code that could hold more information and be printed in smaller spaces. By positioning the data vertically and horizontally, 2-dimensional codes are able to increase the amount and density of the information contained.

Main Types of 2-Dimensional Codes

Type	Shape		Features	Error correction/ recovery rate
Data Matrix		L-shaped profile pattern and diagonal timing pattern	Allows symbols to be made compact.	Data structures of older version and ECC200 are different. ECC200 has a 30% error correction rate
QR Code		Three profile symbols	Enables high-speed reading, and is not affected by direction.	Four selectable correction rates: 7%, 15%, 25% and 30%.
MAXI Code		Concentric circles in center	Data structure enables high-speed profile.	Primary message: 25% Secondary message: Standard level SEC (15%) Extended level EEC (21%)
PDF417	Stack		Suitable for large data volumes, readable by laser scanners	Contains seven correction levels

Labelers and printers for 2-dimensional codes onto labels are widely used in the fields of distribution and logistics. Taking advantage of the error correction function of the 2-dimensional code reader, codes can be directly printed onto objects (such as LCD glass substrates, wafers, electronic components, metallic parts, etc.), thus making it possible to integrate objects and information. This ability allows the use of 2-dimensional codes in a wide range of applications that have been considered to be difficult until now. Laser Markers and pin stamping machines are available for use in direct marking for applications such as these.