Barcode and QR Code

Barcode QR Code

A barcode or bar code is a method of representing data in a visual, machine-readable form. Initially, barcodes represented data by varying the widths, spacings and sizes of parallel lines. These barcodes, now commonly referred to as linear or one-dimensional (1D), can be scanned by special optical scanners, called barcode readers, of which there are several types.

Barcode symbology is the method of encoding data into barcodes using lines, dots, or squares. When a barcode scanner reads the symbols, it decodes the data and records it for various uses.

Symbology
Text

Scalable Vector Graphics (SVG)

A QR code, quick-response code, is a type of two-dimensional matrix barcode invented in 1994 by Masahiro Hara of Japanese company Denso Wave for labelling automobile parts. It features black squares on a white background with fiducial markers, readable by imaging devices like cameras, and processed using Reed-Solomon error correction until the image can be appropriately interpreted. The required data is then extracted from patterns that are present in both the horizontal and the vertical components of the QR image.

QR Code