A (Barcode) Symbology defines the technical details of a particular type of barcode: the width of the bars, character set, method of encoding, checksum specifications, etc.
public enum Symbology
|A multi-row, variable-length 2D symbology with high data capacity and error-correction capability.
|QR code (short for Quick Response) is a specific matrix barcode (2D code), readable by dedicated QR barcode readers and camera phones.
|A 2D matrix symbology consisting of black and white square modules arranged in either a square or rectangular pattern.