EasyMatrixCode2 is able to find and decode GS1-compliant data matrix codes.
The GS1 standard adds semantic identifiers to the contents of a data matrix code. These identifiers are interpreted in an easy and consistent way.
The structure of GS1-compliant content is as follows:
]d2[GS1]{Id1}{Value1}[GS1]{Id2}{Value2}…
where:
| □ | “]d2” is the string identifying a GS1-compliant stream, |
| □ | [GS1] is the GS1 escape character (0x1d), |
| □ | {Id} is an application identifier, |
| □ | {Value} is the value associated to that identifier. |
Example
The string:
]d2[GS1]11180112[GS1]15190101
is interpreted as follows:
| □ | It contains two GS1 parts: 11180112 and 15190101. |
| □ | The first (11180112) is composed of the identifier 11 and the value 180112, meaning that the product has a production date (the meaning of identifier 11) of January 12th, 2018. |
| □ | The second (15190101) is composed of the identifier 15 and the value 190101, meaning that the product has a best before date (the meaning of identifier 15) of January 1st, 2019. |
For more information, see https://www.gs1.org/