Hylafax calls a script called faxrcvd every time a fax is received. You can read the barcode from the image by inserting a line such as:
barcode=`/path_to_barcode_command/bardecode -t any -j 1 -f $qfile`
# Then do something with $barcode
For more information on the faxrcvd script please use the following link on the Hylafax web site: http://www.hylafax.org/man/faxrcvd.html
