diff --git a/slides_template/example.tex b/slides_template/example.tex
index 8b48ae4..47ed80c 100644
--- a/slides_template/example.tex
+++ b/slides_template/example.tex
@@ -155,6 +155,11 @@
 
 \date{December 2, 1980}
 
+\newcommand{\credit}[1]{%
+  \tikz[overlay]{\node at (current page.south east)
+    [anchor=south east,yshift=1.1em,xshift=0.35em]
+    {\smaller \smaller {[}#1{]}};}}
+
 \begin{document}
 
 % remove some of the space in the itemize to make it quite compact