Creating Datamatrices using libdmtx utils

Install the package by running

sudo apt-get install libdmtx-utils

and installing all maybe missing packages it demands.

Now, run the datamatrix generator with a command like echo -n <message> | dmtxwrite -d <size_of_square_in_pixel> -m <margin_in_pixel> > <filename>.png

For us, a command like echo -n red_rose | dmtxwrite -d 50 -m 10 > image.png should do the job.

Check http://www.libdmtx.org/display.php?text=dmtxwrite.1 for further arguments.

To read a datamatrix, type dmtxread -n <filename>.png

Check http://www.libdmtx.org/display.php?text=dmtxread.1 for further uses.