Two-Dimensional Barcode (2-D Barcode)
Definition - What does Two-Dimensional Barcode (2-D Barcode) mean?
Two-dimensional barcodes are also known as matrix barcodes or matrix codes.
Techopedia explains Two-Dimensional Barcode (2-D Barcode)
In a Quick Response (QR) code, one of the most common types of 2-D bar codes, the design includes a finder pattern, an arrangement of squares that shows the scanner how big a QR code is and how it is positioned. There is also an alignment pattern, another pattern that provides accuracy for scanners. These 2-D codes are often "redundant" in the sense that they have a particular "margin of error" so that the code can be compromised and still be read well by a scanner.