How to draw borders around slides in latex beamer handouts

Question

I am using the LaTeX beamer package. How do I draw a border around each slide when I use the handout format (eg. {4 on 1}). I would like to have something silmilar to the "-d" option available in Unix "psnup" which I used with my old seminar style slides and PostScript output.

Answer 1

This adds a rectangle around each logical page:

\usepackage{pgfpages}
\pgfpagesuselayout{4 on 1}[a4paper, landscape, border shrink=5mm]
\pgfpageslogicalpageoptions{1}{border code=\pgfusepath{stroke}}
\pgfpageslogicalpageoptions{2}{border code=\pgfusepath{stroke}}
\pgfpageslogicalpageoptions{3}{border code=\pgfusepath{stroke}}
\pgfpageslogicalpageoptions{4}{border code=\pgfusepath{stroke}}