Common Encodings in the Real World¶
Barcode¶
- Multiple black bars and white spaces of varying widths, arranged according to specific encoding rules, used to express a set of information as a graphical identifier
- International Standards
- EAN-13 product standard, 13-digit number
- Code-39: 39 characters
- Code-128: 128 characters
- Online Barcode Reader
QR Code¶
- A data symbol that records information using specific geometric shapes arranged in a pattern of black and white on a plane according to certain rules
- Stacked/Row-based 2D codes: Code 16k, Code 49, PDF417
-
Matrix 2D codes: QR CODE
