What is the difference between the 2D barcode options (GS1 DataMatrix, Data Matrix with GS1 Digital Link and QR Code with GS1 Digital Link)?

GS1 DataMatrix, Data Matrix with GS1 Digital Link and QR Code with GS1 Digital Link are types of 2D barcodes that are all approved for use within the GS1 system for specific applications. At this time, not all retail systems can scan and process 2D barcodes. If using one of these barcodes on a retail POS product, a 1D barcode will be needed until the transition period is complete. See the transition FAQ for more detail. All three barcode types are capable of encoding GS1 Application Identifiers (AIs) like GTIN, batch/lot number, and expiration number. How those AIs are encoded into the barcode changes how they can be used. GS1 DataMatrix uses a data format, called GS1 element string syntax. QR Code and Data Matrix use the GS1 Digital Link URI syntax. In the examples below, the text next to or under the barcodes shows some of the data that is encoded.

GS1 DataMatrix is a variant of Data Matrix that uses GS1 element string syntax, which is also seen in other GS1 barcodes like GS1-128. This data format is used extensively throughout the supply chain to support getting important data where it is needed in healthcare, with fresh foods, on logistic units and in a variety of other places. It does not offer the web connectivity of QR Code and Data Matrix to enhance consumer engagement. For more information on structure and characteristics, please refer to the GS1 DataMatrix Guideline. 

QR Code and Data Matrix use the GS1 Digital Link URI syntax to put data into a web compatible format that also allows the information to be used for traditional supply chain applications like price lookup, while also connecting to the web. - QR Code is the current preference for consumer engagement because the default camera application on any mobile device in the world can automatically scan the QR Code and connect the user to the website or other resource. - Data Matrix can also be used to connect users to the web, but not all mobile device cameras can automatically process this barcode type at this time. 

*NOTE: What is encoded in the QR Code and Data Matrix barcode is not fully represented in the text that is required to be printed below these barcodes.