2Dkoodit

2Dkoodit is a term used to describe two-dimensional barcodes that encode data in both horizontal and vertical directions. Unlike traditional one-dimensional barcodes, 2Dkoodit can store larger amounts of information in a compact pattern and can be read from any angle by a scanner or camera.

The concept originated with the development of QR codes and other two-dimensional symbologies in the late 20th century. Standardization has been led by international bodies such as ISO/IEC, including ISO/IEC 18004 for QR codes and ISO/IEC 16022 for Data Matrix. Common forms of 2Dkoodit include QR codes, Data Matrix, Aztec, PDF417, and MaxiCode. They are widely supported by smartphones, point-of-sale systems, and industrial scanners.

Encoding in 2Dkoodit employs error correction codes, allowing decoding even if part of the symbol is damaged or obscured. Data capacity depends on the specific symbol and its version or size. For example, QR codes can store thousands of numeric or alphanumeric characters, with higher error correction levels reducing capacity but increasing reliability; Data Matrix can also achieve high density in a smaller footprint.

Applications of 2Dkoodit span retail labeling, ticketing, URL sharing, asset tracking, logistics, payments, and mobile marketing. They are commonly scanned to retrieve encoded data or to launch a web resource, instruction, or application. The technology supports rapid, contactless data transfer and is adaptable to various environments.

Limitations include the need for a sufficiently large symbol and favorable printing quality for reliable readability, as well as lighting conditions affecting camera capture. Some 2Dkoodit payloads may be encrypted or require specialized apps, and users should verify sources when codes point to online resources. See also two-dimensional barcode, QR code, and Data Matrix.