Error correction is built into these barcodes to increase readability, so even if one or more cells are damaged, the data can still be read. Similar to QR barcodes, Data Matrix barcodes have a high fault tolerance making them highly readable at low resolutions and allow for encoding large amounts of data. Data Matrix barcodes are also used frequently in engineering applications where data matrix barcodes are marked with lasers, physical dots (dot-peen) or chemical etching. These types of two-dimensional barcodes are well suited for identifying things like small electronic components and assemblies due to the code’s ability to encode up to fifty characters in a symbol that is readable at 2 or 3 mm 2. Decoding these requires a reader capable of decoding 2D barcodes.ĭata Matrix barcodes get their name from the black and white "cells" or modules arranged in either a square or rectangular pattern - also know as the matrix.
2D barcodes can hold hundreds and sometimes thousands of characters. They are able to maintain a fairly small size while holding much more data than linear 1D barcodes. Two-dimensional (2D) barcodes, such as Data Matrix, PDF417, and QR Code, typically have patterns, squares, dots, hexagons and other geometric patterns. Two-dimensional Barcodes : More data in less space Changing the density of 1D barcodes can help to shrink a barcode to display more data on a page or screen but at the cost of reduced resolution and the ability to scan properly. Their linear format makes them better suited for smaller amounts of information since larger values would make the barcode too wide to display properly on a screen or printed page. 1D barcodes can hold up to 85 characters (character limit is specific to a given symbology). One-dimensional barcode data is stored in linear, parallel lines that vary in width and spacing. One-dimensional Barcodes: Simple & easy to implement The methods used by each barcode type for storing that data varies greatly between these two symbology types. One-Dimensional (1D) VS Two-Dimensional barcodesīoth 1D and 2D barcodes encode data that is decoded using a laser or other imaging device, but that is where the similarities stop.
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