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The Datamatrix (or Data matrix) is mostly used for logistics and for labeling small electronic components.
Example
Datamatrix
Generator
If you want to generate your own Datamatrix visit generator.beetagg.com
Twitter about Datamatrix
I'm reading .... .. 2D Datamatrix Codes http://bit.ly/bs7XHI
RT @dwimberger: DataMatrix in Quartz Composer bit.ly/9qM2LJ - added binary distribution download link so people can try it out themselves.
DataMatrix Encode SDK/ASP Control - Make DataMatrix barcode to image using ASP: With the SDK… http://goo.gl/fb/5xip
Scanning
Scanning a Datamatrix is easy.
  • Download the BeeTagg Multicode Reader and install it.
  • Start the reader.
  • Point the camera at the Datamatrix - and shoot!
Capacity
In theory a Datamatrix can store up to 2335 alphanumeric characters. For Mobile Tagging 40-45 characters are feasible (depends on the physical size of the Datamatrix). Otherwise average phones will not be able to detect them anymore.
Datamatrix
Datamatrix with 20 characters (1 region)
Datamatrix
Datamatrix with 40 characters (1 region)
Datamatrix
Datamatrix with 80 characters (4 regions)
Datamatrix
Datamatrix with 240 characters (16 regions)

The BeeTagg Multicode Reader only reads Datamatrix codes with 1 region (around 45 characters). Codes with more than 1 region would require a large physical size and are therefore not feasible for Mobile Tagging.
Pitfalls
Using Datamatrix for Mobile Tagging (or other applications) has some pitfalls, that you should definitely avoid.
Most problems arise because the tester has a good phone (like Nokia's N95) with a high quality camera, but the actual user has an average phone with an average camera.
Whitespace / Quitezone
Make sure you leave an empty space (marked in red) of around 4 modules (or 10% of the code size) on each side.
Amount of data
You should not encode more than 45 characters in a Datamatrix (1 region). Otherwise detection will be too bad with average phones (see "Capacity").
Color
You should always use black and white. If contrast is too low code detection will be impossible.
Design
Some people add logos in the middle or change colors. You should not do that as detectability goes down and people will have difficulties to recognize it as a Datamatrix.
Size
The code should never be smaller than 2cm (with ~40 characters encoded). The more characters you encode the larger the code has to be. But you should never encode more than 80 characters.
Blogs about Datamatrix
Bar code width reduction (BWR). Is there an industry standard being applied when printing 2D data matrix codes using offset litho? Traditionally on.
William Raveis explains the new raveis.com Housing Data Matrix -- the important benchmarks and indicators of market activity.
... to link the physical items (books, tapes etc.) with the digital catalog. For the link between the physical items and their digital entries, I proposed to tag the items with DataMatrix Codes (2D Barcodes, see DataMatrix@Wikipedia) that.
We propose two single-unit and two block optimization formulations of the sparse PCA problem, aimed at extracting a single sparse dominant principal component of a data matrix, or more components at once, respectively. ...
QR code et Datamatrix by enbanf. Comment coder une adresse Internet en code 2D visuel.
Saw this great description of Datamatrix encoding via Trivium . Very good your us visual thinkers. And if you need it, Atalasoft has tools for both reading and writing Datamatrix 2D barcodes (and other barcodes as well).
Click this icon to see all public photos and videos tagged with datamatrix datamatrix · Click this icon to see all public photos and videos tagged with Das Auto Das Auto · Click this icon to see all public photos and videos tagged with ...
Cognex s id readers allow 2d data matrix reliable reading - COGNEX / Find all the industrial manufacturers on DirectIndustry | industry | industrial | - DirectIndustry.com.
Automation task At a company's goods receipt delivered goods are to be recorded by the HawkEye HE40 Data Matrix code scanner. The scanner is to transfer the read data via a serial connection using a RS232 communication module CM1241 to ...
Hi J?rgen,your description sounds like a two dimensional barcode, as Alistair is suggesting.If so, you should be able to find out how ...
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