# [OS X TeX] QR codes

Juan Luis Varona jvarona at unirioja.es
Thu Oct 17 02:29:26 CEST 2013

Dear friends,

This is a strange behavior in the mac:

Lel's execute this code copied from
http://tex.stackexchange.com/questions/1429/latex-package-to-generate-qr-codes

-----

\documentclass{standalone}
\usepackage{pst-barcode}
%\usepackage{auto-pst-pdf} % uncomment this if used with pdflatex
\begin{document}
\begin{pspicture}(1.0in,1.0in)
\psbarcode{Some text}{}{qrcode}
\end{pspicture}
\end{document}

-----

If you see the pdf with Apple Preview, or with TeXShop, or Skim,
and yo do a lot of zoom, it seems that the pdf is not vectorial,
because you see points of different gray level.