2d-matrix
DotCode (DotCode)
2D symbology composed of disconnected circular dots on a regular grid pattern, engineered for ultra-high-speed continuous inkjet (CIJ) and laser marking onto beverage cans, pharmaceutical blisters, and tobacco packaging.
Governing Specification: ISO/IEC 21471:2020
Data Format & Required Fields
Composed of disconnected dots arranged in a checkerboard pattern where the sum of row and column coordinates for each dot is either all even or all odd. Zero quiet zone required at start/stop.
Allowed Character SetASCII characters, numeric serial numbers, and binary data.
Payload Length Rule Between 1 and 250 characters
Example Valid Format
PRX-DOT-CAN-99014-BATCH-CIndustry Guidance & Practical Applications
- High-speed beverage packaging lines (bottom of aluminium beverage cans)
- EU and WHO FCTC tobacco track-and-trace serialization
- Pharmaceutical blister packs and high-speed unit-dose packaging lines
Packaging & Scanning Notes: Enables high-speed in-line printing at speeds exceeding 1,000 items per minute without ink spreading.
Symbol Constraints & Label Guidelines
- Requires high-resolution industrial machine vision imagers; not readable by conventional consumer laser scanners.