[Zope] PDF and barcodes

[Hannu Krosing]

Martijn Pieters wrote:
> 
> As for barcodes: They are only lines of different widths. If you have the
> source of that Java class, you could reimplement it in Python, and, if they
> are part of the documents you are going to print with PDF, integrate that
> with your generated document. Both PDF libraries mentioned allow you to
> directly draw lines of a specified width, and import a GIF.

Recently there was an article in http://slashdot.org about some nice
college 
where students were forced to wear an ID sign with their Social Security 
Number as barcode (and a Pepsi logo ;). The school authorities claimed
that 
it was OK as the number was "encoded".

It included a link to the description of the barcode format which seemed 
quite easy both to read and to implement, even as alternating black and 
white gif stripes.

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Hannu